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 609810976

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

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+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "1F0B508D-ADE4-4567-BF35-5C6B5077B292": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        },
+        "50C4FADB-9E20-49C5-A9D2-5550DB283242": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        }
+    },
+    "rootModelIdentifier": "1F0B508D-ADE4-4567-BF35-5C6B5077B292"
+}

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

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+size 811045184

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

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+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "0F1F5F2A-2175-4FBB-B547-F7EAB80CAD99": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        },
+        "48FAB058-F3F2-49D6-B088-32075FA40574": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        }
+    },
+    "rootModelIdentifier": "0F1F5F2A-2175-4FBB-B547-F7EAB80CAD99"
+}