Refactor into monorepo for v6 (#1837)

> You can [learn more about this here](https://blog.invertase.io/react-native-firebase-2019-7e334ca9bcc6).

.github/ISSUE_TEMPLATE.md

@@ -115,14 +115,16 @@ This issue list of this repo is exclusively for bug reports.
   - [ ] Crashlytics
   - [ ] Dynamic **Links**
   - [ ] **Functions** Callable
+  - [ ] In App Messaging
+  - [ ] Indexing
   - [ ] Invites
   - [ ] Instance ID
+  - [ ] ML Kit
   - [ ] Notifications
   - [ ] Performance Monitoring
   - [ ] Realtime **Database**
   - [ ] Remote **Config**
   - [ ] Storage
-  - [ ] In App Messaging
 - **Are you using `TypeScript`?**
   - [ ] No
   - [ ] Yes, version: `N/A`

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,6 +1,6 @@
 <!-- Thanks for submitting a pull request! Please provide enough information so that others can review your pull request properly. -->
 <!-- If this PR fixes an issue, type "Fixes #issueNumber" to automatically close the issue when the PR is merged. -->
-<!-- Please ensure you've also read the `/CONTRIBUTING.md` guide. -->
+<!-- Please esure you've also read the `/CONTRIBUTING.md` guide. -->
 
 ### Summary
 

.github/stale.yml

@@ -4,7 +4,6 @@ daysUntilStale: 28
 daysUntilClose: 14
 # Issues with these labels will never be considered stale
 exemptLabels:
-  - 📌 pin
   - await-invertase-feedback
   - await-firebase-sdk-fix
   - await-maintainer-feedback