feat(tauri): add NSIS hooks for post-install and post-uninstall

This update introduces NSIS hooks for managing shortcuts and directories
during the installation and uninstallation of the application. The hooks
ensure that the desktop and start menu shortcuts are removed properly,
along with the associated program directory.

- Implement post-install and post-uninstall hooks in NSIS
- Update configuration to reference the new hooks file

src-tauri/nsis-hooks.nsh

@@ -0,0 +1,11 @@
+!macro NSIS_HOOK_POSTINSTALL
+  Delete "$DESKTOP\GitLite.lnk"
+  Delete "$SMPROGRAMS\GitLite.lnk"
+  RMDir /r "$SMPROGRAMS\GitLite"
+!macroend
+
+!macro NSIS_HOOK_POSTUNINSTALL
+  Delete "$DESKTOP\GitLite.lnk"
+  Delete "$SMPROGRAMS\GitLite.lnk"
+  RMDir /r "$SMPROGRAMS\GitLite"
+!macroend

src-tauri/tauri.conf.json

@@ -55,7 +55,8 @@
     "windows": {
       "nsis": {
         "installMode": "currentUser",
-        "installerIcon": "icons/icon.ico"
+        "installerIcon": "icons/icon.ico",
+        "installerHooks": "nsis-hooks.nsh"
       }
     }
   },