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/control/character_controller.ts

@@ -91,9 +91,8 @@ export class KinematicCharacterController {
      */
     public setUp(vector: Vector) {
         let rawVect = VectorOps.intoRaw(vector);
-        const result = this.raw.setUp(rawVect);
+        return this.raw.setUp(rawVect);
         rawVect.free();
-        return result;
     }
 
     public applyImpulsesToDynamicBodies(): boolean {