feat: add clearMorphAnimationData function

thermion_dart/native/include/SceneManager.hpp

@@ -87,6 +87,9 @@ namespace thermion_filament
             int numFrames,
             float frameLengthInMs);
 
+        void clearMorphAnimationBuffer(
+            EntityId entityId);
+
         bool setMorphTargetWeights(EntityId entityId, const float *const weights, int count);
 
         math::mat4f getLocalTransform(EntityId entityId);

thermion_dart/native/include/ThermionDartApi.h

@@ -136,6 +136,9 @@ extern "C"
 		int numMorphTargets,
 		int numFrames,
 		float frameLengthInMs);
+	EMSCRIPTEN_KEEPALIVE void clear_morph_animation(
+		void *sceneManager,
+		EntityId entity);
 
 	EMSCRIPTEN_KEEPALIVE void reset_to_rest_pose(
 		void *sceneManager,