Merge branch 'feature/native-assets' of github.com:nmfisher/polyvox_filament into feature/native-assets

- prebuilt library zip files now downloaded directly from Cloudflare to
  .dart_tool/dart_filament
- for Windows compatibility, we need to depend on a fork of
  native_toolchain_c (to support linking against non-import libs when
  creating a DLL)

dart_filament/pubspec.yaml

@@ -12,11 +12,12 @@ dependencies:
   tuple:
   ffi:
   animation_tools_dart: ^0.0.4
-  native_assets_cli: ^0.6.0
   native_toolchain_c:
     git:
       url: git@github.com:nmfisher/native.git
       path: pkgs/native_toolchain_c
+      ref: 99020084c4687be4c58c7115a167088c0441d1de
+  archive: ^3.6.1
 
 dev_dependencies:
   ffigen: ^11.0.0