Show a warning when trying to install mods for the wrong game version

[qe201020335]

If the detected game version is not listed by beatmods, and the user manually selected a game version, show a warning about the mismatch game version when trying to install mods.

This has happened many times before. When there is a new update, before beatmods update their version list, some users may attempt to manually select the previous moddable version which results in a broken game. Especially during the unity update.

Some users even thought they could downgrade the game by simply selecting an older game version in ModAssistant.

[qe201020335]

Just resolved the conflicts with the version detection changes

[qe201020335]

I should clarify, that this change will only pop up the warning when the current game version is not known on BeatMods and the user manually selected a version, specifically to address the issues that would happen after a game update and before BeatMods creates a new version/alias

It will NOT pop up the warning when BeatMods knows the current game version and the user is deliberately trying to install another version's mods.