fix: reuse intensity for ambience

fix: add presets to stage, set defaults

fix: useanimation types

fix: bump three-stdlib to fix effects

Revert "fix: update three-stdlib version"

This reverts commit 8a78d38.

fix: update three-stdlib version

fix: add types to enviroment preset (pmndrs#363)

fix: stage model center

fix: use drei-assets URL for environment presets (pmndrs#362)

fix: export stage