Packagify utility scripts

Author: kateinoigakukun

Makefile

@@ -0,0 +1,11 @@
+// swift-tools-version: 5.10
+
+import PackageDescription
+
+let package = Package(
+    name: "WasmKitDevUtils",
+    platforms: [.macOS(.v13)],
+    targets: [
+        .executableTarget(name: "WasmKitDevUtils", path: "Sources"),
+    ]
+)

Utilities/Package.swift

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+# WasmKit Development Utilities
+
+This directory contains a set of utilities that are useful for developing WasmKit.
+
+## Usage
+
+Re-generates all the auto-generated files
+
+```console
+$ swift run WasmKitDevUtils
+```
+
+Re-generates only the internal VM instruction related files
+
+```console
+$ swift run WasmKitDevUtils generate-internal-instruction
+```
+
+Re-generates only the Core Wasm instruction related files based on `Instructions.json`.
+
+```console
+$ swift run WasmKitDevUtils generate-wasm-instruction
+```