Fix game starting SteamVR in replay and/or when switching FPFC

[Arimodu]

Fix game automatically starting SteamVR when FPFC is switched on or off. Done by checking if SteamVR is running before initializing OpenXR, if SteamVR is not running, dont initialize OpenXR. This way we even preserve the functionality for people who want to start the game in FPFC and then switch to SteamVR, since in that case user can just start SteamVR anytime along the way manually and it will be bound on next check

[Arimodu]

Converting to a draft since not done yet. Aparently some people can fuck around and change the steam dir, so now I gotta write a finder

[Arimodu]

So I guess that fixes it, also gives the option to dynamically bind to SteamVR as long as fpfc flag is active, however thats kinda whacky so ¯_(ツ)_/¯