Implement manual-sdp-munging for custom signaller
requested to merge chrisb/gst-plugins-rs:fix-webrtcsink-custom-signaller-manual-sdp-munging-error into main
Commit 1c54c778 ("webrtcsink: Add a mechanism for SDP munging") caused the webrtcsink-custom-signaller example to print an error when run:
(webrtcsink-custom-signaller:110102): GLib-GObject-CRITICAL **: 22:02:23.383: Object class MyCustomWebRTCSinkSignaller doesn't implement property 'manual-sdp-munging' from interface 'GstRSWebRTCSignallableIface'Fix this by implementing the 'manual-sdp-munging' property.
link: #611 (closed)