Check that all dependencies provided by Flipper core are specified as peers in plugins

Summary: This is a guard to ensure all Flipper built-in packages are declared as peer dependencies. It also removes all of them from nested node_modules after installation to be 100% sure they always loaded from the root folder, because e.g. react can be still installed as a transitive dependency even it is not declared as dependency directly.

Reviewed By: passy

Differential Revision: D27040267

fbshipit-source-id: 1e315a6b280b36ab20778ee261aa386b51d9f964

desktop/plugins/package.json

@@ -10,6 +10,18 @@
     "fs-extra": "^9.0.1",
     "p-map": "^4.0.0"
   },
+  "peerDependencies": {
+    "flipper": "*",
+    "flipper-plugin": "*",
+    "antd": "*",
+    "react": "*",
+    "react-dom": "*",
+    "@emotion/styled": "*",
+    "@ant-design/icons": "*",
+    "@types/react": "*",
+    "@types/react-dom": "*",
+    "@types/node": "*"
+  },
   "scripts": {
     "postinstall": "../ts-node ./postinstall.ts"
   }