feat(theme): 重构主题系统，新增 glass-pill 按钮样式

- ThemeConfig 接口扩展至 60+ 语义化属性
- 新增深浅主题预设 (glassPill overrides)
- button-group 支持 glass-pill 样式变体
- 默认主题改为浅色
- 移除 toolbar 容器硬编码定位
- 统一组件 CSS 变量命名规范
- 暂时隐藏下拉箭头

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@fishdingding/bim-engine-sdk",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "BIM Engine SDK for Vue2, Vue3, React and HTML",
   "main": "./dist/bim-engine-sdk.umd.js",
   "module": "./dist/bim-engine-sdk.es.js",