chore: init frontend-source directory with tooling scaffold

Former-commit-id: 435fb8e3e4f8e334ad3b0e95052edbdd9547d197

frontend-source/scripts/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "frontend-source-tools",
+  "private": true,
+  "scripts": {
+    "unpack": "node unpack-webpack.js",
+    "extract-api": "node extract-api-calls.js",
+    "extract-router": "node extract-router.js",
+    "beautify": "bash beautify-all.sh",
+    "compare": "bash compare-output.sh"
+  },
+  "dependencies": {
+    "@babel/parser": "^7.24.0",
+    "@babel/traverse": "^7.24.0",
+    "@babel/types": "^7.24.0",
+    "js-beautify": "^1.15.0",
+    "prettier": "^3.2.0"
+  }
+}