Setup basic code for login.

API/Controllers/BaseApiController.cs

@@ -0,0 +1,13 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace API.Controllers
+{
+    [ApiController]
+    [Route("api/[controller]")]
+    public class BaseApiController : ControllerBase
+    {
+        public BaseApiController()
+        {
+        }
+    }
+}