Add auto-registration mechanism

- Add User registration mechanism when adding auth provider id to claims, if no User Id corresponds to the auth provider Id
- Swallow unique constraint violation for unique auth provider id on user table, in case of duplicate requests
- Add Serilog logging
- Add no bookmarks and no tags message when none is found on Bookmark List page

YABA.API/Controllers/MiscController.cs

@@ -2,6 +2,7 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using System.Net;
+using YABA.API.Settings;
 using YABA.API.ViewModels;
 using YABA.Service.Interfaces;
 
@@ -24,7 +25,7 @@ namespace YABA.API.Controllers
         }
 
         [HttpGet]
-        [Obsolete]
+        [DevOnly]
         [Route("GetWebsiteMetaData")]
         [ProducesResponseType(typeof(GetWebsiteMetaDataResponse), (int)HttpStatusCode.OK)]
         [ProducesResponseType((int)HttpStatusCode.BadRequest)]

YABA.API/Controllers/TestController.cs

@@ -0,0 +1,42 @@
+using Microsoft.AspNetCore.Mvc;
+using System.Net;
+using YABA.API.Settings;
+
+namespace YABA.API.Controllers
+{
+    [ApiController]
+    [ApiVersion("1")]
+    [DevOnly]
+    [Route("api/v{version:apiVersion}/[controller]")]
+    public class TestController : ControllerBase
+    {
+        private readonly ILogger<TestController> _logger;
+
+        public TestController(ILogger<TestController> logger)
+        {
+            _logger = logger;
+        }
+
+        [HttpGet("TestLog")]
+        [ProducesResponseType(typeof(string), (int)HttpStatusCode.OK)]
+        [ProducesResponseType((int)HttpStatusCode.NotFound)]
+        [ProducesResponseType((int)HttpStatusCode.BadRequest)]
+        public IActionResult TestLog()
+        {
+            var testObject = new { id = 1, name = "Test Message" };
+            _logger.LogDebug("Testing debug: {@TestObject}", testObject);
+            return Ok(testObject);
+        }
+
+        [HttpGet("TestLogError")]
+        [ProducesResponseType(typeof(string), (int)HttpStatusCode.OK)]
+        [ProducesResponseType((int)HttpStatusCode.NotFound)]
+        [ProducesResponseType((int)HttpStatusCode.BadRequest)]
+        public IActionResult TestLogError()
+        {
+            var testObject = new { id = 1, name = "Test Message" };
+            throw new Exception();
+            return Ok(testObject);
+        }
+    }
+}