Some improvements to the Homescreen!
* Do not show collections placeholder in home screen on a clean install and subsequently as well.
* Increase the limit for top sites to 160
* Show 20 top sites on the screen at a time, before pagination occurs.
* Add github actions workflows
* Add github actions for CI
* Fix lint and detekt errors
* Add caching to the github actions
* Add the workflow statuses to the README
* Give the jobs more descriptive names
* Consolidate github actions workflows to a single workflow
* Give the steps meaningful names, save detekt and lint results
Item is now refreshed by calling notifyDataSetChanged on the adapter when the last tab from the collection has been swiped away and the user cancels the deletion by pressing the cancel button from the dialog.
Also added a "wasSwiped" flag to onCollectionRemoveTab in order to check if the tab was deleted from a swipe action and not by pressing the "X" button.
* For #11171 - Removes feature flag for the new tab tray
* For #11171 - Removes all tab references from homeFragment
* For #11171 - Fixes unit tests
* For #11171 - Gets UI tests to compile and HomeScreenTest to pass
* For #11171 - Fixes `deleteMultipleSelectionTest`
* For #11171 - Fixes `openHistoryItemInNewPrivateTabTest`
* For #11171 - Fixes `openHistoryInPrivateTabTest`
* For #11171 - Fixes `openHistoryInNewTabTest`
* For #11171 - Fixes `openNewPrivateTabTest`
* For #11171 - Fixes tabbedBrowsingTests
* For #11171 - Fixes SettingsPrivacyTest
* For #11171 - Fixes TopSitesTest
* For #11171 - Fixes lint errors
* Ignore
* For #10505 - Adjusts wordmark margins
* For #10505 - Removes topsite header, fixes collections header size and removes divider
* For #10505 - Restyle the top site items on the homescreen