More VR Fixes

Haven't made a post in some time but I've had the chance to revisit some previously broken functionality for VR.

The image below is a component of UIExtensions working in VR. I couldn't get a good screenshot of the Follower wheel due to the button to trigger it immediately closing the menu before the screenshot gets taken.

Another not shown portion is SkyUI HUD widgets should now work. Technically they worked before but some modifications of file paths had to be done. The reason for this is that in SkyrimVR the HUDMenu is loaded at "Interface/VR/VR_HMD_info" instead of the previous "Interface/hudmenu" or "Interface/exported/hudmenu" this results in all externally loaded widgets having their expected path be relative to that of the root swf i.e. "Interface/VR/" which essentially means no widgets are loaded at all since no widgets will be relative to that, nor will the SkyUI widgetloader container be relative to that.

Fortunately, due to the way Scaleform works, a custom file loader can be implemented to circumvent this issue by effectively trying both paths if one fails. So for example if I have a widget normally at "Interface/skyui/followerpanel.swf" in SkyrimSE or LE, SkyrimVR will be trying to load it at "Interface/VR/skyui/followerpanel.swf" which obviously does not exist (unless explicitly put it there). So what this patch will do (built-in to SKSEVR) is if the file path starts with "Interface/VR/" and the expected file is not found, it will then try to find it at "Interface/". This allows for maintaining the possibility of a VR-only swf since it will check there first, but still allow existing SkyrimSE HUD mods to work in VR without any changes to file paths.

I've included an early-access build of SKSE 2.0.12 that fixes these issues.