Added oidc service to webapi with a dumb way of authenticating incoming tokens

WebAPI/Controllers/BaseController.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Linq;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Net.Http.Headers;
+
+namespace WebAPI.Controllers
+{
+    public class BaseController : ControllerBase
+    {
+        protected string BearerToken =>
+            Request.Headers.Keys.Contains(HeaderNames.Authorization) &&
+            Request.Headers[HeaderNames.Authorization].Count > 0
+                ? Request.Headers[HeaderNames.Authorization].First()
+                : String.Empty;
+    }
+}