Operation type. Values can be grant, revoke, and request.
OptionaluserId: numberGrant or revoke the media capture permission to the user with userId. userId is only required for the grant and revoke operations.
OptionalmediaCapturePermission: MediaCapturePermissionValue | MediaCapturePermissionMedia capture permission. Only required for the grant operation.
Host can grant the media capture permission requested by mediaCapturePermission('request'). If the host doesn't respond to the request with 10 seconds after receiving it, it will be automatically denied. Host can revoke the granted media capture permission. Participants can request the media capture permission.