* Add `WakeLock` to dismiss ringing call screen when call is cancelled
We had already some checks in place to automatically cancel a ringing call notification/screen when the call was no longer active, but the `RoomInfo` updates weren't being processed because the app was 'paused'.
The partial wakelock should ensure these room info updates are handled.
* Add mutual exclusion to `ActiveCallManager` methods to improve thread safety
2 replace all actions have been performed:
- "SPDX-License-Identifier: AGPL-3.0-only" to "SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial"
- "Please see LICENSE in the repository root for full details." to "Please see LICENSE files in the repository root for full details."
- Add `ActiveCallManager` to handle incoming and ongoing calls.
- Add ringing call notifications with full screen intents and missed call ones as part of the 'conversation' notifications.
---------
Co-authored-by: ElementBot <benoitm+elementbot@element.io>
