Mobile: Add quick actions (#2247)

* Super basic QuickAction is working!

* QuickAction successfully creates notes

* Update icons

* Update icons and support new to-do

* Update icons and support new to-do

* Fixed

* Extract QuickActions

* It works as long as you go out of the edit screen (saving is not sufficient)

* working? but still kinda buggy...

* Cleanup

* Cleanup

* Cleanup

* Use the same pattern as onJoplinLinkClick_

* Cleanup

* Cleanup

* Remove pluginAssets/index.js change

* manual Andoid linking

* Transition QuickActions.js to .ts

* Unstage QuickActions.js in favor of .ts

* Move QuickActions out of lib/

* Add comment about userInfo in QuickActions

* Remove redundant QuickActions file

* Remove pluginAssets/index to resolve conflict

* Update CONTRIBUTING.md to include test runner troubleshooting

* Add `npm run tsc` to Unit Tests docs

Co-authored-by: Helmut K. C. Tessarek <tessarek@evermeet.cx>