Refactor the default plugins and validation logic into Group object

Summary: This diff refactors the scattered logic of required plugins and default selection of the plugins into Group class. Also the same class handles the deeplink logic.

Reviewed By: mweststrate

Differential Revision: D19666745

fbshipit-source-id: c9427f0ddba643f0b32aac7b6f2496e2e3248b12

src/fb-stubs/constants.tsx

@@ -27,4 +27,9 @@ export default Object.freeze({
   IS_PUBLIC_BUILD: true,
 
   FEEDBACK_GROUP_LINK: 'https://github.com/facebook/flipper/issues',
+
+  // Workplace Group ID's
+  LITHO_SUPPORT_GROUP_ID: 0,
+  GRAPHQL_ANDROID_SUPPORT_GROUP_ID: 0,
+  GRAPHQL_IOS_SUPPORT_GROUP_ID: 0,
 });