feat: implement textAlign property (#11790)

for paragraph blocks, image blocks, list blocks, and table blocks

Should fix #8617 and #11254.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Added text alignment options (left, center, right) for paragraph,
list, image, note, and table blocks.
- Introduced alignment controls in toolbars and slash menus for easier
formatting.
- Enabled keyboard shortcuts for quick text alignment changes (supports
Mac and Windows).
- **Localization**
- Added English, Simplified Chinese, and Traditional Chinese
translations for new alignment commands and shortcuts.
- **Style**
  - Blocks now visually reflect selected text alignment in their layout.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: L-Sun <zover.v@gmail.com>

blocksuite/affine/rich-text/src/align.ts

@@ -0,0 +1,35 @@
+import { TextAlign } from '@blocksuite/affine-model';
+import {
+  TextAlignCenterIcon,
+  TextAlignLeftIcon,
+  TextAlignRightIcon,
+} from '@blocksuite/icons/lit';
+import type { TemplateResult } from 'lit';
+
+export interface TextAlignConfig {
+  textAlign: TextAlign;
+  name: string;
+  hotkey: string[] | null;
+  icon: TemplateResult<1>;
+}
+
+export const textAlignConfigs: TextAlignConfig[] = [
+  {
+    textAlign: TextAlign.Left,
+    name: 'Align left',
+    hotkey: [`Mod-Shift-L`],
+    icon: TextAlignLeftIcon(),
+  },
+  {
+    textAlign: TextAlign.Center,
+    name: 'Align center',
+    hotkey: [`Mod-Shift-E`],
+    icon: TextAlignCenterIcon(),
+  },
+  {
+    textAlign: TextAlign.Right,
+    name: 'Align right',
+    hotkey: [`Mod-Shift-R`],
+    icon: TextAlignRightIcon(),
+  },
+];