Add Core ML conversion

Core ML conversion, task=text2text-generation, precision=float32

coreml/text2text-generation/decoder_float32_model.mlpackage/Data/com.apple.CoreML/weights/weight.bin

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+size 1222443300

coreml/text2text-generation/decoder_float32_model.mlpackage/Manifest.json

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+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "5A093E7D-B0A5-4429-AA78-506BC374E9B4": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        },
+        "A8299508-1BB2-4BD1-AC7B-BAD1026A6FA4": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        }
+    },
+    "rootModelIdentifier": "5A093E7D-B0A5-4429-AA78-506BC374E9B4"
+}

coreml/text2text-generation/encoder_float32_model.mlpackage/Data/com.apple.CoreML/weights/weight.bin

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+size 814727488

coreml/text2text-generation/encoder_float32_model.mlpackage/Manifest.json

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+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "8FF42233-FFB6-4A86-943E-6E34B62E685C": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        },
+        "9D2C00F3-D1B3-441B-964E-39C3C7755C25": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        }
+    },
+    "rootModelIdentifier": "8FF42233-FFB6-4A86-943E-6E34B62E685C"
+}