Implemented extendable system settings tab. Started implementing white labeling settings

Moonlight.Api/Http/Controllers/Admin/Settings/WhiteLabelingController.cs

@@ -0,0 +1,49 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Moonlight.Api.Constants;
+using Moonlight.Api.Services;
+using Moonlight.Shared;
+using Moonlight.Shared.Http.Requests.Admin.Settings;
+using Moonlight.Shared.Http.Responses.Admin.Settings;
+
+namespace Moonlight.Api.Http.Controllers.Admin.Settings;
+
+[ApiController]
+[Authorize(Policy = Permissions.System.Settings)]
+[Route("api/admin/system/settings/whiteLabeling")]
+public class WhiteLabelingController : Controller
+{
+    private readonly SettingsService SettingsService;
+    private readonly FrontendService FrontendService;
+
+    public WhiteLabelingController(SettingsService settingsService, FrontendService frontendService)
+    {
+        SettingsService = settingsService;
+        FrontendService = frontendService;
+    }
+
+    [HttpGet]
+    public async Task<ActionResult<WhiteLabelingDto>> GetAsync()
+    {
+        var dto = new WhiteLabelingDto
+        {
+            Name = await SettingsService.GetValueAsync<string>(FrontendSettingConstants.Name) ?? "Moonlight"
+        };
+
+        return dto;
+    }
+
+    [HttpPost]
+    public async Task<ActionResult<WhiteLabelingDto>> PostAsync([FromBody] SetWhiteLabelingDto request)
+    {
+        await SettingsService.SetValueAsync(FrontendSettingConstants.Name, request.Name);
+        await FrontendService.ResetCacheAsync();
+        
+        var dto = new WhiteLabelingDto
+        {
+            Name = await SettingsService.GetValueAsync<string>(FrontendSettingConstants.Name) ?? "Moonlight"
+        };
+
+        return dto;
+    }
+}