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

internal/infrastructure/tray/icon_darwin.go

@@ -0,0 +1,16 @@
+//go:build darwin
+
+package tray
+
+import _ "embed"
+
+// templateIconBytes embeds the macOS template icon as a multi-resolution TIFF
+// generated from the 1x and 2x source PNGs in assets/.
+//
+//go:embed assets/statusbarTemplate.tiff
+var templateIconBytes []byte
+
+// regularIconBytes keeps a PNG fallback for APIs that expect a regular raster icon.
+//
+//go:embed assets/statusbarTemplate.png
+var regularIconBytes []byte