Move version statistics to database.

DiscImageChef.Database/Migrations/20181221041242_VersionStatistics.cs

@@ -0,0 +1,24 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace DiscImageChef.Database.Migrations
+{
+    public partial class VersionStatistics : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable("Versions",
+                                         table => new
+                                         {
+                                             Id = table.Column<int>(nullable: false)
+                                                       .Annotation("Sqlite:Autoincrement", true),
+                                             Value        = table.Column<string>(nullable: true),
+                                             Synchronized = table.Column<bool>(nullable: false)
+                                         }, constraints: table => { table.PrimaryKey("PK_Versions", x => x.Id); });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable("Versions");
+        }
+    }
+}