fixes #1213

Debian 10 too old for QT5.  Ubuntu dependencies tested and work fine on Debian.
Increase header size of distro title & moved Gentoo into alphabetical order

tested in a fresh 22.04 VM today

Add instruction to install on Mageia, as Nheko is now part of the official repo of the distribution.

Turns out that setting the desktop env isn't enough we also need to 
manually ensure kwalletd is started. As we can't tell steam to run 
multiple commands, people will need a small wrapper script that 
does this.

just use builddep in Fedora

This adds functionality for viewing joined rooms and activating rooms.

PKGBUILD pulled from the AUR stable release

See https://github.com/Nheko-Reborn/nheko/issues/715

Something is still wrong on shutdown, need to debug that.
And CI will fail.

Updated documentation to include instructions on installing Nheko using
the Chocolatey package manager on Windows.