Feature/lfs removal

[JaXt0r]

To test

1. Start Unity once
2. Load game to boot world.scene (FeatureFlag.SkipMainMenu is fine)
3. Please test also with an Android build. I checked the .meta files of the .dll's/.so's about when they should be baked into an MVR release, but please double check if it works correctly.

Changes:

• Moved .dll dependencies (ZenKit etc.) into package (Already set, Unity will download once Editor is opened)
• Moved world scenes into same package (Already linked inside Build Settings; therefore world.zen will load)
• Removed DLLs for FilePickerButton

[Tyroonis]

They are still causing problems.
But we can also do this as an extra repo.
The Pico OpenXR package is unfortunately not available from Pico on github

https://developer.picoxr.com/resources/
We need PICO Unity OpenXR SDK.

[Tyroonis]

Build looks good.
I'm still creating a followIssue for the PicoFix