Scale is fine as long as cc scale <= normal scale

Created a separate variable for cc normal, independent perturb implementations

Added the option to use a clearcoat normal independent from the (maybe) perturbed geometry normal.

Missing imports for Geometry and BufferGeometry causes issues in typescript projects.

On iOS, by default the bones that are sampled from the bone texture look
like they are using mediump. This can result in noticeable jitter or
other more severe issues depending on the bone transformation matrix.

Fix this by explicitly declaring the sampler as highp.