feat: Markdown编辑器添加有序列表按钮支持

src/lib/components/admin/MarkdownEditor.svelte

@@ -15,6 +15,7 @@
 		Italic,
 		Link,
 		List,
+		ListOrdered,
 		SquareSplitVertical,
 		Strikethrough
 	} from 'lucide-svelte';
@@ -257,6 +258,14 @@
 		>
 			<List aria-hidden="true" />
 		</button>
+		<button
+			type="button"
+			class="md-btn"
+			onclick={() => insertAtCursor('1. ', '', '列表项')}
+			title="有序列表"
+		>
+			<ListOrdered aria-hidden="true" />
+		</button>
 		<button
 			type="button"
 			class="md-btn"