C# gw offload work, schema-izing stuff

extra/admin-api/Spacebar.GatewayOffload/Controllers/IdentifyController.cs

@@ -0,0 +1,13 @@
+using Microsoft.AspNetCore.Mvc;
+using Spacebar.Interop.Authentication;
+using Spacebar.Interop.Authentication.AspNetCore;
+using Spacebar.Models.Db.Contexts;
+
+namespace Spacebar.GatewayOffload.Controllers;
+
+[ApiController]
+[Route("/_spacebar/offload/gateway/Identify")]
+public class IdentifyController(ILogger<IdentifyController> logger, SpacebarAuthenticationService authService, SpacebarDbContext db, IServiceProvider sp) : ControllerBase
+{
+    
+}