Move Static Fields to package.json: hermesdebuggerrn

Summary:
Flipper reads metadata to show on the sidebar from `package.json` and static fields (`id`, `title`, and `icon`) from `FlipperPlugin` class. If there are fields declared in both file, `FlipperPlugin` class takes precedences.

With Sandy (new Flipper plugin API), there is no static field available. In order to prevent unexpected scenario happening when migrating to Sandy, this codemod-ish is applied to plugins that contain static field.

The static fields are merged into `package.json` to get the same result. In addition, the static fields are also removed.

Reviewed By: rickhanlonii

Differential Revision: D22411862

fbshipit-source-id: cb381261f575313110b781c2fddd3a2099e6479a

desktop/plugins/hermesdebuggerrn/index.tsx

@@ -61,10 +61,6 @@ const Container = styled(FlexColumn)({
 });
 
 export default class extends FlipperDevicePlugin<State, any, any> {
-  static title = 'Hermes Debugger';
-  static id = 'Hermesdebuggerrn';
-  static icon = 'code';
-
   static supportsDevice(device: Device) {
     return !device.isArchived && device.os === 'Metro';
   }

desktop/plugins/hermesdebuggerrn/package.json

@@ -1,13 +1,13 @@
 {
   "$schema": "https://fbflipper.com/schemas/plugin-package/v2.json",
   "name": "flipper-plugin-hermesdebuggerrn",
-  "id": "flipper-plugin-hermesdebuggerrn",
+  "id": "Hermesdebuggerrn",
   "version": "0.49.0",
   "main": "dist/bundle.js",
   "flipperBundlerEntry": "index.tsx",
   "license": "MIT",
   "title": "Hermes Debugger (RN)",
-  "icon": "apps",
+  "icon": "code",
   "keywords": [
     "flipper-plugin"
   ],