Show a confirmation dialog when the Show Connect Info button is
clicked and video is active, to prevent users from
unintentionally showing sensitive information while live.
Among lots of stuff:
- Generate a random password on first load
- Add `ConnectInfo` dialog including QR code display
- Add `Generate Password` button to generate a new random
password
- Delete `Copy Password to Clipboard` button
- Delete `GetConnectString` or whatever from WebSocketServer
(reimplemented the functionality directly into ConnectInfo)
- Added `GeneratePassword()` to Utils
Todo: Show warning when users specify their own passwords
Debug mode requires a restart of the websocket server by design.
However, to avoid interrupting connections, the websocket server is
not automatically restarted when the setting is changed
