Implemented frontend hosting file generation helper

Moonlight.ApiServer/Http/Controllers/Admin/Sys/AdvancedController.cs

@@ -0,0 +1,27 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using MoonCore.Extended.PermFilter;
+using Moonlight.ApiServer.Services;
+
+namespace Moonlight.ApiServer.Http.Controllers.Admin.Sys;
+
+[Authorize]
+[ApiController]
+[Route("api/admin/system/advanced")]
+public class AdvancedController : Controller
+{
+    private readonly FrontendService FrontendService;
+
+    public AdvancedController(FrontendService frontendService)
+    {
+        FrontendService = frontendService;
+    }
+
+    [HttpGet("frontend")]
+    [RequirePermission("admin.system.advanced.frontend")]
+    public async Task Frontend()
+    {
+        var stream = await FrontendService.GenerateZip();
+        await Results.File(stream, fileDownloadName: "frontend.zip").ExecuteAsync(HttpContext);
+    }
+}