launcher version display should show the version of the currently enabled HDR

[techyCoder81]

the display should show the hdr string for what is currently enabled, rather than always showing the latest. For example, if a PR is enabled, then the version string should show that.

[techyCoder81]

This should also work on ryujinx if you remove hdr to test hdr-pr

[techyCoder81]

there should be a new main menu type, similar to NotInstalledMenu, called something like PrInstalledMenu that only has "Play PR Build" and "Remove PR Build", pending info on whether leading . will cause a mod folder to be ignored by file discovery.