Feature/speaker button

[Bionic-dev715]

Type of change(s)

• Bug fix
• [✔️ ] Feature / enhancement
• Infrastructure / tooling (CI, build, deps, tests)
• Documentation

What changed and why

• added a speaker button in incoming call notification so directly answer call on speaker.
• when clicked on speaker the full screen ui does not open.
• created custom background drawables for notification buttons

Tests performed

• tested it on realme device - realme ui 4 Android 13 Snapdragon 870

Before & after preview

After

Closes the following issue(s)

• Closes #

Checklist

• [ y] I read the contribution guidelines.
• [ y] I manually tested my changes on device/emulator (if applicable).
• [N ] I updated the "Unreleased" section in CHANGELOG.md (if applicable).
• [ y] I have self-reviewed my pull request (no typos, formatting errors, etc.).
• [ N] All checks are passing.

[Bionic-dev715]

changed android:tint to app:tint

[Bionic-dev715]

reverted app:tint changes

[salihefee]

i think this should be a setting disabled by default.

[naveensingh]

An "answer on speaker" button is not planned. Please read the contribution guidelines. Thanks.