Added app loaders and screen for the ui. Added identity service. Started auth screens

Moonlight.Client/Services/IdentityService.cs

@@ -0,0 +1,57 @@
+using MoonCore.Blazor.Tailwind.Services;
+using MoonCore.Exceptions;
+using MoonCore.Helpers;
+using Moonlight.Shared.Http.Responses.Auth;
+
+namespace Moonlight.Client.Services;
+
+public class IdentityService
+{
+    public string Username { get; private set; }
+    public string Email { get; private set; }
+    public string[] Permissions { get; private set; }
+    public bool IsLoggedIn { get; private set; }
+
+    public event Func<Task> OnStateChanged;
+
+    private readonly CookieService CookieService;
+    private readonly HttpApiClient ApiClient;
+    
+    public IdentityService(CookieService cookieService, HttpApiClient apiClient)
+    {
+        CookieService = cookieService;
+        ApiClient = apiClient;
+    }
+
+    public async Task Check()
+    {
+        try
+        {
+            var response = await ApiClient.GetJson<CheckResponse>("api/auth/check");
+
+            Username = response.Username;
+            Email = response.Email;
+            Permissions = response.Permissions;
+
+            IsLoggedIn = true;
+        }
+        catch (HttpApiException)
+        {
+            IsLoggedIn = false;
+        }
+
+        await OnStateChanged();
+    }
+
+    public async Task Login(string token)
+    {
+        await CookieService.SetValue("token", token, 30);
+        await Check();
+    }
+
+    public async Task Logout()
+    {
+        await CookieService.SetValue("token", "", 30);
+        await Check();
+    }
+}