Implement Element Call to current Android App (instead of Jitsi)

### Your use case

#### What would you like to do?
Given that video call between Android phones don't work at all (#7619) and other major issues around voip which get ignored for months, please consider implementing Element Call in the current Android App (successor of Jitsi).
I know EC will be part of ElementX but it says that ElementX will be released by the end of the year which is still quite a while to wait.

#### Why would you like to do it?
Search "call" in open issues and see 275 issues regarding call feature. Around 15% of all existing open issues could be closed/reevaluated by implementing it.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_

### Are you willing to provide a PR?

No