Fixes creation of VPM unitypackages

[momo-the-monster]

I had to modify some meta files that had invalid YAML according to the parser that makes the .unitypackage meta files.

[MerlinVR]

Loading the dlls with modified .meta files in Unity appears to throw errors, then Unity reimports them and reverts the modifications unfortunately. I'd prefer not to add another potential way for Unity's import to get subtly broken if possible.

[momo-the-monster]

The fix causes more issues, not merging.