feat(stores): 添加共享存储模块

- 新增 shared-storage.ts 文件
- 使用 Solid Primitives 的持久化存储功能
- 创建并导出 comfyLocation 信号和其设置函数

src/stores/shared-storage.ts

@@ -0,0 +1,11 @@
+import { makePersisted } from '@solid-primitives/storage';
+import { tauriStorage } from '@solid-primitives/storage/tauri';
+import { createSignal } from 'solid-js';
+
+const storage = tauriStorage();
+
+// eslint-disable-next-line solid/reactivity
+export const [comfyLocation, setComfyLocation] = makePersisted(createSignal<string>(''), {
+  storage,
+  name: 'comfy-location',
+});