Fixes #1363

Please note that this doesn't prompt when you try to send a message with a bad command.

See also:
https://daniel.haxx.se/blog/2023/01/08/copyright-without-years/
https://hynek.me/til/copyright-years/

fixes #429

* Initial commit for VoIP v1 implementation

* Added draft of event handlers for voip methods

* Added event handlers for VoIP events, added rejectCall, added version tracking for call version for V0 and V1 compatibility

* Added call events to the general message pipeline. Modified Call Reject mechanism

* Added message delegates for new events. Modified hidden events. Updated handle events.

* Updated implementation to keep track of calls on other devices

* Fixed linting

* Fixed code warnings

* Fixed minor bugs

* fixed ci

* Added acceptNegotiation method definition when missing gstreamer

* Fixed warnings

* Fixed linting

Apparently on windows `Qt.inputMethod.visible` is always true when an input method is installed. Also on windows even after removing the check enter is still consumed by the input method, not nheko.

Add a delay to all destructions and move the call dialog stuff up a
level, so that we don't destroy the component when destroying the parent
dialog.

fixes #984

* swap send and sticker icons based on text input

* collapse MessageInput options when window is narrow

* buttons disappear once you type/send partial text from input method

It seems that you need to manually destroy created objects... Great...

fixes #898

fixes #351