added initial migration

Tv7Playlist.Data/PlaylistContextFactory.cs

@@ -0,0 +1,16 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace Tv7Playlist.Data
+{
+    public class PlaylistContextFactory : IDesignTimeDbContextFactory<PlaylistContext>
+    {
+        public PlaylistContext CreateDbContext(string[] args)
+        {
+            var optionsBuilder = new DbContextOptionsBuilder<PlaylistContext>();
+            optionsBuilder.UseSqlite("Data Source=designPlaylist.db");
+
+            return new PlaylistContext(optionsBuilder.Options);
+        }
+    }
+}