Use the new Kirigami.ColumnView.interactiveResizeEnabled attached property
which allows to have a built in resize handle for ColumnView pages
removing the need for a custom handle with resize logic
depends from https://invent.kde.org/frameworks/kirigami/-/merge_requests/1795
Create a new module for the room info drawer QML. This also requires moving some QML to LibNeoChat common with other modules. Finally all QML in roominfo is modifed to not depend on app.
This merge request works around an annoying startup hang that I introduced when adding text-to-speech to NeoChat. The previous implementation was a QML singleton that used the `TextToSpeech` QML component. Unfortunately that component blocks the UI thread when first loading it, while it connects to speech-dispatcher.
This MR just rewrites that singleton in C++, and moves initialization of QtTextToSpeech to the first time you read a message aloud. It doesn't fix the performance problem, but it at least stops it from affecting startup.
In the future, I'd like to move speech operations to a background thread to completely mitigate the initialization freeze.
