[FA-55] User service should be done

FictionArchive.Service.UserService/Models/IntegrationEvents/UserInvitedEvent.cs

@@ -0,0 +1,17 @@
+using FictionArchive.Service.Shared.Services.EventBus;
+
+namespace FictionArchive.Service.UserService.Models.IntegrationEvents;
+
+public class UserInvitedEvent : IIntegrationEvent
+{
+    // Invited user info
+    public Guid InvitedUserId { get; set; }
+    public required string InvitedUsername { get; set; }
+    public required string InvitedEmail { get; set; }
+    public required string InvitedOAuthProviderId { get; set; }
+
+    // Inviter info
+    public Guid InviterId { get; set; }
+    public required string InviterUsername { get; set; }
+    public required string InviterOAuthProviderId { get; set; }
+}