feat: implement custom window controls and replace header bar with title bar

- Add window handlers for minimize, maximize, close, and check if maximized in ipcMain.
- Update preload script to use new window control IPC events.
- Refactor window service to remove old IPC event handlers and use new handlers.
- Remove old HeaderBar and DragRegion components, replacing them with a new TitleBar component.
- Update Layout component to use TitleBar instead of HeaderBar.
- Remove useWinManager hook as its functionality is now integrated into TitleBar.
- Update login page to remove HeaderBar and adjust layout accordingly.
- Update constants to remove old window IPC events.
- Update package dependencies to replace @iconify/vue with @lucide/vue.

electron/ipc/window-handlers.ts

@@ -0,0 +1,23 @@
+import { ipcMain, BrowserWindow } from 'electron';
+
+export function registerWindowHandlers(mainWindow: BrowserWindow): void {
+  ipcMain.handle('window:minimize', () => {
+    mainWindow.minimize();
+  });
+
+  ipcMain.handle('window:maximize', () => {
+    if (mainWindow.isMaximized()) {
+      mainWindow.unmaximize();
+    } else {
+      mainWindow.maximize();
+    }
+  });
+
+  ipcMain.handle('window:close', () => {
+    mainWindow.close();
+  });
+
+  ipcMain.handle('window:isMaximized', () => {
+    return mainWindow.isMaximized();
+  });
+}