Feature/tilemap editor (#237)

* feat: 添加 Tilemap 编辑器插件和组件生命周期支持

* feat(editor-core): 添加声明式插件注册 API

* feat(editor-core): 改进tiledmap结构合并tileset进tiledmapeditor

* feat: 添加 editor-runtime SDK 和插件系统改进

* fix(ci): 修复SceneResourceManager里变量未使用问题

packages/tilemap/src/index.ts

@@ -0,0 +1,17 @@
+/**
+ * Tilemap System for ECS Framework
+ * ECS框架的瓦片地图系统
+ */
+
+// Component
+export { TilemapComponent, ITilemapData, ITilesetData, ResizeAnchor } from './TilemapComponent';
+
+// Systems
+export { TilemapRenderingSystem, TilemapRenderData, ViewportBounds } from './systems/TilemapRenderingSystem';
+
+// Loaders
+export { TilemapLoader, ITilemapAsset } from './loaders/TilemapLoader';
+export { TilesetLoader, ITilesetAsset } from './loaders/TilesetLoader';
+
+// Tiled converter
+export { TiledConverter, ITiledMap, ITiledConversionResult } from './loaders/TiledConverter';