Generate policies again (#149322)

* Generate ADMX/ADML policy declaration files from static analysis

Fixes: #148941

* fix build

* move to optional dependencies

build/package.json

@@ -58,6 +58,7 @@
     "jsonc-parser": "^2.3.0",
     "mime": "^1.4.1",
     "mkdirp": "^1.0.4",
+    "node-fetch": "2",
     "p-limit": "^3.1.0",
     "source-map": "0.6.1",
     "through2": "^4.0.2",
@@ -70,5 +71,9 @@
     "watch": "../node_modules/.bin/tsc -p tsconfig.build.json --watch",
     "npmCheckJs": "../node_modules/.bin/tsc --noEmit"
   },
-  "dependencies": {}
+  "optionalDependencies": {
+    "tree-sitter": "https://github.com/joaomoreno/node-tree-sitter/releases/download/v0.20.0/tree-sitter-0.20.0.tgz",
+    "tree-sitter-typescript": "^0.20.1",
+    "vscode-gulp-watch": "^5.0.3"
+  }
 }