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/tsup.config.ts

@@ -7,4 +7,7 @@ export default defineConfig({
     sourcemap: true,
     clean: true,
     external: ["../pkg/rapier_wasm2d.js"],
+    loader: {
+        ".wasm": "base64",
+    },
 });