When I reject an incoming video call request, I want to send the reason for my rejection to host

1. In service web, I can add /edit/delete my message templates

2.On the incoming video call card, the reject button will add a action button, click this action button, I can select a reason message template to send to the host. The action will include the options: message templates list + write custom message.

3. For host side, the host can receive the message in rcv meeting.