* fix: NullReferenceError while deleting a GameObject with parameter usage UI open
* fix: NullRefException from editor when moving a Menu Installer outside of an avatar
* chore: rearrange package structure to have the package at the root
* ci: update CI workflows
* ci: fixing workflow bugs
* ci: recurse building .zip package
* ci: more fixes
* ci: add back in the nadena.dev VPM repo
* ci: fix tests