BVH animation loading / retargeting (#25)

This PR adds support for BVH animation files, with a custom animation
player and retargeting solution for our Blender Rigify-based skeletal
meshes.

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Co-authored-by: Brooks Palin <brookspalin710@gmail.com>

studio-frontend/vite-plugins/multiple-assets/server.ts

@@ -24,9 +24,11 @@ function getFiles(dir, files_): string[] {
 const mimeTypes = {
     ".7z": "application/x-7z-compressed",
     ".bin": "application/octet-stream",
+    ".bvh": "text/bvh",
     ".css": "text/css",
     ".eot": "font/eot",
     ".gif": "image/gif",
+    ".glb": "model/gltf-binary",
     ".gltf": "model/gltf+json",
     ".gz": "application/gzip",
     ".hdr": "image/vnd.radiance",