feat: overhaul application to APM 应用商店 with enhanced download management

- Removed CHANGELOG.md and electron-vite-vue.gif files.
- Updated LICENSE to reflect new copyright holder.
- Transformed README.md to reflect new project identity and features.
- Introduced DownloadQueue and DownloadDetail components for managing downloads.
- Implemented download simulation and management logic in App.vue.
- Added URL scheme handling in Electron main process.
- Integrated electron-app-universal-protocol-client for protocol handling.
- Updated package.json to include new dependencies.

electron/main/handle-url-scheme.ts

@@ -0,0 +1,5 @@
+import { dialog } from 'electron'
+
+export async function handleUrlScheme(requestUrl: string) {
+    console.log('Handling URL scheme request:', requestUrl);
+}