feat(android): migrate XML layouts to Jetpack Compose (NdoleStudio#943)

* feat: migrate XML layouts to Jetpack Compose

* fix(theme): correct status bar icon color logic

* fix: use painterResource for platform drawables to avoid crash

* feat: use proper material design icons

* style: increase top margin for logo in main screen

* style: increase top loggo padding

* style: increase button sizes and icons consistency

* style: use normal centered buttons instead of full-width blocks

* feat: auto-detect phone numbers on login screen

* style: add icons to buttons and improve heartbeat loader width

* style: heart icon color matches button content when disabled

* style: update settings screen colors and status bar

* fix: address PR review comments\n\n- Improved URL validation in LoginViewModel using URLUtil.\n- Added exception handling around URI constructor and network calls.\n- Cleaned up wildcard imports in UI files.\n- Ensured isLoading is reset on error.

* fix: address more review comments from Copilot and Greptile

* style: set custom status bar color for Android < 12

* style: ensure status bar is white in light mode and matches background in dark mode

* style: change top padding to n4 in heartbeats page

* chore: upgrade target/compile SDK to 37 and update all dependencies

* chore(android): remove unused navigation-compose dependency

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: c63cc85c-be26-4770-8587-c30bcf787997

* style: ensure phone number text color follows theme in MainActivity

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

fix: add gravatar fallback to profile picture

Merge branch 'main' of github.com:NdoleStudio/httpsms

Fix display of the login page

Fix swagger

Fix swagger

Add documentation for the phone API keys feature

Send event when app cannot send SMS

Opt out of edge to edge enformcement

Add missed call event