Add W8A8 model without palettization

mlp/mlp-int8-int8.mlpackage/Data/com.apple.CoreML/model.mlmodel

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+version https://git-lfs.github.com/spec/v1
+oid sha256:2518b53e2fb6703f50f819bbf6c66ce13d814aea756bd81080c2c7469771c0da
+size 26703

mlp/mlp-int8-int8.mlpackage/Data/com.apple.CoreML/weights/weight.bin

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+version https://git-lfs.github.com/spec/v1
+oid sha256:5db52501929b9c4ebba2a7b97ebf5a96c2a73689c25a13145a6719f011683420
+size 541380928

mlp/mlp-int8-int8.mlpackage/Manifest.json

@@ -0,0 +1,18 @@
+{
+    "fileFormatVersion": "1.0.0",
+    "itemInfoEntries": {
+        "2EAF9D17-3E5E-41A9-B479-93163CB2E388": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Weights",
+            "name": "weights",
+            "path": "com.apple.CoreML/weights"
+        },
+        "F960D70A-BD35-4579-AE40-C3413E161547": {
+            "author": "com.apple.CoreML",
+            "description": "CoreML Model Specification",
+            "name": "model.mlmodel",
+            "path": "com.apple.CoreML/model.mlmodel"
+        }
+    },
+    "rootModelIdentifier": "F960D70A-BD35-4579-AE40-C3413E161547"
+}