[79992530]Garora adding luigi script

Let's change this to use hosted luigi instead of local and use the new style of parameter passing. Also, let's store the data in our output bucket by default so that it works out of the box:

```python
mortar luigi luigiscripts/<%= project_name_alias %>_luigi.py \
        --output-base-path "s3://mortar-example-output-data/$MORTAR_EMAIL_S3_ESCAPED/<%= project_name_alias %>"
```