Add Core ML version of instruct-gpt-j for text-generation

coreml/text-generation/float16_logits_model.mlpackage/Data/com.apple.CoreML/model.mlmodel

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+oid sha256:8731e6de5109d24bf2851a87032a5b44a1025f743ae384c6148a5f7ff61b03a3
+size 7818714

coreml/text-generation/float16_logits_model.mlpackage/Data/com.apple.CoreML/weights/weight.bin

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+version https://git-lfs.github.com/spec/v1
+oid sha256:f47cdb37d0f1174904cdfd81460e744ea1a6d4ae2c3ce308b3d941824acd6ad1
+size 12133912640

coreml/text-generation/float16_logits_model.mlpackage/Manifest.json

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+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "bf41fe4f-0033-47b4-88a8-c7f87d23bfc8": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        },
+        "e9a44c68-fc5c-4971-a3be-d4c856c5410c": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        }
+    },
+    "rootModelIdentifier": "bf41fe4f-0033-47b4-88a8-c7f87d23bfc8"
+}