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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+oid sha256:825712e3fbb4f0777dc3ebf90815bb64fc1f092ce6fcb4ace3732059482cd5e9
+size 609810976

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

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+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "6A623E64-03FF-4728-9846-23DE3E1373E1": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        },
+        "8A00CA32-3EED-4290-98E1-4556F4E9B797": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        }
+    },
+    "rootModelIdentifier": "8A00CA32-3EED-4290-98E1-4556F4E9B797"
+}

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": {
+        "D19CC8B0-C7E6-4830-9712-75820DEB75B0": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        },
+        "FBA32D63-9ECE-4BF0-835A-4F26ACEE9954": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        }
+    },
+    "rootModelIdentifier": "D19CC8B0-C7E6-4830-9712-75820DEB75B0"
+}