Localization Update

Apparently, I just couldn't resist after that Unity vulnerability fix. Since the very beginning, Bird's Eye could've had support for multiple languages, but on my way to release, I kinda scrapped it in favour of modding support. But now I fixed it and every mod can have its own localization, just like the base game.

I also improved the first launch experience. The game now starts in fullscreen and correctly shows the tutorial prompt.

Also, some small polishing touches here and there that make this game just a bit better on a technical level.