feat(android): RTL UI

[darcywong00]

18.0 sprint focus of updating the Keyman for Android UI to handle right-to-left

Reference document: RTL UX Localization

Change Display Language

List of strings always left-to-right

Info page

flip left/right navigation arrows

Keyman Settings

left arrow to navigate forward

Adjust Keyboard Height

Maybe have an rtl OSK screenshot where backspace and return keys point the other direction

Add Language to installed keyboard

keyboard row needs left arrow to advance

English Language Settings

left arrow for advance on keyboard row

[darcywong00]

And some general layout migrations:
replace

• paddingLeft --> paddingStart
• paddingRight --> paddingEnd

[darcywong00]

afaict, all the RTL UI issues are resolved with the associated PRs.