initial work to split into dart_filament and flutter_filament

dart_filament/pubspec.yaml

@@ -0,0 +1,32 @@
+name: dart_filament
+description: Dart bindings for the Filament Physically Based Renderer.
+version: 0.5.0
+homepage:
+
+environment:
+  sdk: ">=3.3.0 <4.0.0"
+
+dependencies:
+  vector_math: ^2.1.2
+  plugin_platform_interface: ^2.0.0
+  tuple:
+  ffi:
+  animation_tools_dart: ^0.0.2
+
+dev_dependencies:
+  ffigen: ^11.0.0
+  native_assets_cli: ^0.5.0
+  native_toolchain_c: ^0.4.0
+  test:
+
+ffigen:
+  output: 'lib/dart_filament/dart_filament.g.dart'
+  headers:
+    entry-points:
+      - 'native/include/DartFilamentFFIApi.h'
+      - 'native/include/DartFilamentApi.h'
+    include-directives:
+      - 'native/include/DartFilamentFFIApi.h'
+      - 'native/include/DartFilamentApi.h'
+  ffi-native:
+    assetId: package:dart_filament/dart_filament.dart