add ability to view Migration History

Oqtane.Server/Controllers/MigrationHistoryController.cs

@@ -0,0 +1,28 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Authorization;
+using Oqtane.Models;
+using System.Collections.Generic;
+using Oqtane.Shared;
+using Oqtane.Repository;
+
+namespace Oqtane.Controllers
+{
+    [Route(ControllerRoutes.ApiRoute)]
+    public class MigrationHistoryController : Controller
+    {
+        private readonly IMigrationHistoryRepository _history;
+
+        public MigrationHistoryController(IMigrationHistoryRepository history)
+        {
+            _history = history;
+        }
+
+        // GET: api/<controller>
+        [HttpGet]
+        [Authorize(Roles = RoleNames.Host)]
+        public IEnumerable<MigrationHistory> Get()
+        {
+            return _history.GetMigrationHistory();
+        }
+    }
+}