Please provide MCA Selector as a flatpak for Linux users

[Flipper189]

Please provide MCA Selector as a flatpak via flathub.org for linux users.
This makes it much easier to use without having to deal with JavaFX.

[sentisso]

would also appreciate this 👍
I had to go through a lengthy process to finally manage to install javafx. All AUR packages failed during build and I was about to give up, as last resort I asked ChatGPT and it recommended a java version manager sdkman that installed javafx with no issues.

[MestreLion]

More install options would certainly be welcome for us Linux users, be it Flatpak, AppImage or Snap. But at least for Ubuntu 24.04, which is much less flexible than Arch, the instructions in the last part of the Wiki were spot on. Didn't the prebuild JavaFX package work in Arch? I've also suggested a few improvements in #510 that might help fellow Arch users too.