feat(mobile): pwa and browser theme-color optimization (#8168)

[AF-1325](https://linear.app/affine-design/issue/AF-1325/优化-pwa-体验), [AF-1317](https://linear.app/affine-design/issue/AF-1317/优化：-pwa-的顶部-status-bar-颜色应与背景保持一致), [AF-1318](https://linear.app/affine-design/issue/AF-1318/优化：pwa-的底部应当有符合设备安全高度的padding), [AF-1321](https://linear.app/affine-design/issue/AF-1321/更新一下-fail-的-pwa-icon)

- New `<SafeArea />` ui component
- New `useThemeColorV1` / `useThemeColorV2` hook:
    - to modify `<meta name="theme-color" />` with given theme key

packages/frontend/component/src/ui/modal/styles.css.ts

@@ -83,7 +83,7 @@ export const modalContentWrapper = style({
     'screen and (width <= 640px)': {
       // todo: adjust animation
       alignItems: 'flex-end',
-      paddingBottom: 32,
+      paddingBottom: 'env(safe-area-inset-bottom, 20px)',
     },
   },