Add shortcut suggestions for rooms, remove then when leaving (#5180)

* Report shortcut usage for outgoing messages

This patch adds support for creating and pushing dynamic
long-lived shortcuts for outgoing messages. This together
with an existing reference to the roomId used by the
shortcuts as an identifer allows conversations to be
prioritized.

See https://developer.android.com/training/sharing/direct-share-targets#report-usage-outgoing

* Simplify how to get the other user in a DM room

* Add initial avatar icons to shortcuts

* Remove room shortcuts when they're no longer joined

* Try using API 33 for the new tests. They worked locally with API 30, so it's weird the CI asks for a higher API version.

* Add observers for the pin code and session logout states. With this we can prevent new shortcuts from being created and remove existing ones when needed.

* Wrap all calls to `ShortcutManagerCompat` with `runCatchingExceptions` to avoid crashes

* Make `DefaultNotificationConversationService` a singleton.

---------

Co-authored-by: networkException <git@nwex.de>
Co-authored-by: ElementBot <android@element.io>

libraries/ui-strings/src/main/res/values/localazy.xml

@@ -167,6 +167,8 @@
   <string name="common_advanced_settings">"Advanced settings"</string>
   <string name="common_an_image">"an image"</string>
   <string name="common_analytics">"Analytics"</string>
+  <string name="common_android_shortcuts_remove_reason_left_room">"You left the room"</string>
+  <string name="common_android_shortcuts_remove_reason_session_logged_out">"You were logged out of the session"</string>
   <string name="common_appearance">"Appearance"</string>
   <string name="common_audio">"Audio"</string>
   <string name="common_blocked_users">"Blocked users"</string>