UI: Conditionally enable install/uninstall file types buttons based on whether they're installed already

When switching between players' gamepads while saving settings, then
returning to the previous player, the settings show the default settings
instead of the actual settings applied

This feature adds a way to change the Amiibo's nickname inside Smash and
other places where it's used, so it’s not always "Ryujinx." However, I
did not add a GUI or create the Cabinet applet that would allow users to
change this. So you will have to go to system/amiibo and find your
amiibo id to change it.

Currently, in Ryujinx, if an app attempts to open an unimplemented
applet, it crashes. This change adds a dummy applet to send a dummy
response instead of crashing and logs the applet.

Simply add back some missing translations and update outdated
translations for zh-tw.

* Added many missing locales

infra: Add build/release workflows to solution items, remove jitsupport dylib from linux & windows, pack native libraries into Ryujinx executable.

misc: Abstract repeated logic in markup extensions & move Updater into the base of the Avalonia project.

Avalonia: Move LocaleExtension & IconExtension into one namespace to simplify the usage sites in the markup.