Document usage of hfh cli instead of git

(basically the same content as the hfh upload docs, but adapted for datasets)

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_6648). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

<details>
<summary>Show benchmarks</summary>

PyArrow==8.0.0

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.004951 / 0.011353 (-0.006402) | 0.003187 / 0.011008 (-0.007821) | 0.062959 / 0.038508 (0.024451) | 0.028037 / 0.023109 (0.004928) | 0.241374 / 0.275898 (-0.034524) | 0.262792 / 0.323480 (-0.060688) | 0.004132 / 0.007986 (-0.003854) | 0.002766 / 0.004328 (-0.001563) | 0.051416 / 0.004250 (0.047165) | 0.040957 / 0.037052 (0.003904) | 0.260760 / 0.258489 (0.002271) | 0.282018 / 0.293841 (-0.011823) | 0.027689 / 0.128546 (-0.100857) | 0.010433 / 0.075646 (-0.065214) | 0.211598 / 0.419271 (-0.207674) | 0.035447 / 0.043533 (-0.008086) | 0.244333 / 0.255139 (-0.010806) | 0.263192 / 0.283200 (-0.020008) | 0.016816 / 0.141683 (-0.124867) | 1.103188 / 1.452155 (-0.348967) | 1.179093 / 1.492716 (-0.313623) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.092412 / 0.018006 (0.074406) | 0.301226 / 0.000490 (0.300736) | 0.000208 / 0.000200 (0.000008) | 0.000051 / 0.000054 (-0.000003) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.018146 / 0.037411 (-0.019265) | 0.061447 / 0.014526 (0.046921) | 0.072162 / 0.176557 (-0.104394) | 0.118965 / 0.737135 (-0.618170) | 0.073756 / 0.296338 (-0.222583) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.285361 / 0.215209 (0.070152) | 2.776928 / 2.077655 (0.699273) | 1.506859 / 1.504120 (0.002739) | 1.379119 / 1.541195 (-0.162075) | 1.401798 / 1.468490 (-0.066692) | 0.572512 / 4.584777 (-4.012265) | 2.403793 / 3.745712 (-1.341919) | 2.740496 / 5.269862 (-2.529366) | 1.714611 / 4.565676 (-2.851065) | 0.063496 / 0.424275 (-0.360780) | 0.005009 / 0.007607 (-0.002598) | 0.342438 / 0.226044 (0.116393) | 3.368129 / 2.268929 (1.099200) | 1.831200 / 55.444624 (-53.613424) | 1.553611 / 6.876477 (-5.322866) | 1.578116 / 2.142072 (-0.563956) | 0.653034 / 4.805227 (-4.152193) | 0.117724 / 6.500664 (-6.382940) | 0.041188 / 0.075469 (-0.034282) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.972520 / 1.841788 (-0.869268) | 11.186297 / 8.074308 (3.111989) | 9.485829 / 10.191392 (-0.705563) | 0.139715 / 0.680424 (-0.540708) | 0.013705 / 0.534201 (-0.520496) | 0.287384 / 0.579283 (-0.291899) | 0.266784 / 0.434364 (-0.167580) | 0.320789 / 0.540337 (-0.219548) | 0.417484 / 1.386936 (-0.969452) |

</details>
PyArrow==latest

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.005570 / 0.011353 (-0.005783) | 0.003416 / 0.011008 (-0.007592) | 0.051160 / 0.038508 (0.012652) | 0.031082 / 0.023109 (0.007973) | 0.279336 / 0.275898 (0.003438) | 0.300529 / 0.323480 (-0.022951) | 0.004320 / 0.007986 (-0.003666) | 0.002781 / 0.004328 (-0.001548) | 0.049642 / 0.004250 (0.045391) | 0.044379 / 0.037052 (0.007327) | 0.293797 / 0.258489 (0.035308) | 0.317844 / 0.293841 (0.024003) | 0.049697 / 0.128546 (-0.078849) | 0.010624 / 0.075646 (-0.065023) | 0.058834 / 0.419271 (-0.360437) | 0.033869 / 0.043533 (-0.009664) | 0.280547 / 0.255139 (0.025408) | 0.300685 / 0.283200 (0.017486) | 0.017010 / 0.141683 (-0.124673) | 1.172277 / 1.452155 (-0.279878) | 1.205359 / 1.492716 (-0.287358) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.092914 / 0.018006 (0.074907) | 0.303561 / 0.000490 (0.303071) | 0.000219 / 0.000200 (0.000019) | 0.000054 / 0.000054 (-0.000001) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.022379 / 0.037411 (-0.015032) | 0.075460 / 0.014526 (0.060934) | 0.085795 / 0.176557 (-0.090762) | 0.124776 / 0.737135 (-0.612360) | 0.088260 / 0.296338 (-0.208079) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.302873 / 0.215209 (0.087664) | 2.936173 / 2.077655 (0.858519) | 1.589251 / 1.504120 (0.085131) | 1.477552 / 1.541195 (-0.063643) | 1.479322 / 1.468490 (0.010832) | 0.570481 / 4.584777 (-4.014296) | 2.434137 / 3.745712 (-1.311575) | 2.774012 / 5.269862 (-2.495849) | 1.718103 / 4.565676 (-2.847574) | 0.061951 / 0.424275 (-0.362324) | 0.004992 / 0.007607 (-0.002615) | 0.352250 / 0.226044 (0.126205) | 3.457417 / 2.268929 (1.188488) | 1.934587 / 55.444624 (-53.510037) | 1.646904 / 6.876477 (-5.229573) | 1.669429 / 2.142072 (-0.472643) | 0.649665 / 4.805227 (-4.155562) | 0.116630 / 6.500664 (-6.384034) | 0.040669 / 0.075469 (-0.034800) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.011488 / 1.841788 (-0.830300) | 11.866394 / 8.074308 (3.792086) | 10.144588 / 10.191392 (-0.046804) | 0.129931 / 0.680424 (-0.550493) | 0.014885 / 0.534201 (-0.519316) | 0.287463 / 0.579283 (-0.291821) | 0.280754 / 0.434364 (-0.153610) | 0.330139 / 0.540337 (-0.210199) | 0.414653 / 1.386936 (-0.972283) |

</details>
</details>

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