Element call incoming call

[bmarty]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Render incoming Element Call in the timeline as an informative tile.
Also render incoming Element Call in the notification drawer.

Motivation and context

Closes #8938

Screenshots / GIFs

ElementAndroid_IncomingElementCall.mp4

Tests

• Run Element Android
• In an app supporting Element Call (such as Element Web), start an Element Call
• Observe that EA is rendering a notification and now renders the incoming call in the timeline

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/element-hq/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[ElementBot]

	Warnings
⚠️	vector/src/main/res/layout/item_timeline_event_base_state.xml#L8 - Possible overdraw: Root element paints background ?attr/selectableItemBackground with a theme that also paints a background (inferred theme is @android:style/Theme.Holo)
⚠️	vector/src/main/res/layout/item_timeline_event_base_state.xml#L8 - Possible overdraw: Root element paints background ?attr/selectableItemBackground with a theme that also paints a background (inferred theme is @android:style/Theme.Holo)

Generated by 🚫 dangerJS against 12adddb