fix(editor): fix build errors and refactor behavior-tree architecture (#394)

* docs: add editor-app README with setup instructions

* docs: add separate EN/CN editor setup guides

* fix(editor): fix build errors and refactor behavior-tree architecture

- Fix fairygui-editor tsconfig extends path and add missing tsconfig.build.json
- Refactor behavior-tree-editor to not depend on asset-system in runtime
  - Create local BehaviorTreeRuntimeModule for pure runtime logic
  - Move asset loader registration to editor module install()
  - Add BehaviorTreeLoader for asset system integration
- Fix rapier2d WASM loader to not pass arguments to init()
- Add WASM base64 loader config to rapier2d tsup.config
- Update README documentation and simplify setup steps

packages/physics/rapier2d/src/math.ts

@@ -28,7 +28,7 @@ export class VectorOps {
     }
 
     // FIXME: type ram: RawVector?
-    public static fromRaw(raw: RawVector): Vector | null {
+    public static fromRaw(raw: RawVector): Vector {
         if (!raw) return null;
 
         let res = VectorOps.new(raw.x, raw.y);
@@ -56,7 +56,7 @@ export class RotationOps {
         return 0.0;
     }
 
-    public static fromRaw(raw: RawRotation): Rotation | null {
+    public static fromRaw(raw: RawRotation): Rotation {
         if (!raw) return null;
 
         let res = raw.angle;