feat(app): implement basic function

General
- 配置界面支持配置对象存储桶
- 快捷键进入截图
- 一键上传截图 & 复制截图链接

MacOS
- 状态栏指示器和应用图标

wails.json

@@ -0,0 +1,19 @@
+{
+  "$schema": "https://wails.io/schemas/config.v2.json",
+  "name": "SnapGo",
+  "outputfilename": "SnapGo",
+  "frontend:install": "npm install",
+  "frontend:build": "npm run build",
+  "frontend:dev:watcher": "npm run dev",
+  "frontend:dev:serverUrl": "auto",
+  "author": {
+    "name": "mmmy",
+    "email": "mmmy@example.com"
+  },
+  "info": {
+    "productName": "SnapGo",
+    "productVersion": "0.1.0",
+    "copyright": "Copyright © 2026",
+    "comments": "Cross-platform screenshot tool with one-click upload to S3"
+  }
+}