* config: add feature in `config.json`
* groupCall: adjust connection state in feed if allowCallWithoutVideoAndAudio
* matrix-js-sdk: update version for allowCallWithoutVideoAndAudio
- I modified the SDK so that mute unmute work without media and check device permission inside the SDK
- allowCallWithoutVideoAndAudio is only checked at one point outside the SDK
* docu: add join group call without media docu in READMe
---------
Co-authored-by: Robin Townsend <robin@robin.town>
Co-authored-by: Šimon Brandner <simon.bra.ag@gmail.com>
This is an Element project (in the vector-im repo) so the Copyright
should be for New Vector: it was incorrectly attributed to the
foundation for some files (and some files were missing headers).
