FirstRun: Add various Fedora deps

These are all needed for building workspace on my Fedora 38 machine.

• flatpak-devel for flatpak-kcm
• libcap-devel for kwin, libksysguard, powerdevil (might be optional)
• libdisplay-info-devel for kwin
• libva-devel, libavfilter-free-devel, pipewire-utils for kpipewire
• libXxf86vm-devel for kgamma5
• python3-chai for drkonqi
• sassc for breeze-gtk
• xorg-x11-drv-evdev-devel, xorg-x11-drv-libinput-devel for plasma-workspace (might be optional)
• xdotool, xkeyboard-config-devel for plasma-workspace
• libxkbfile-devel for plasma-desktop

I also initially needed qcoro-qt6-devel, and other distros do list their equivalent packages, but I opted not to include it since kdesrc-build runs its own build of that library. The other distros might want to drop that package from their deps if network/kio-extras!300 (merged) lands.

Tested working by building workspace in a clean Fedora 38 Toolbox.