Added support for migrating existing Oqtane installations from DbUp to Migrations. Also added a Migration for version 2.0.2, and set current version to 2.1.0

Oqtane.Server/Migrations/EntityBuilders/AppVersionsEntityBuilder.cs

@@ -0,0 +1,35 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Migrations.Operations;
+using Microsoft.EntityFrameworkCore.Migrations.Operations.Builders;
+using Oqtane.Interfaces;
+
+namespace Oqtane.Migrations.EntityBuilders
+{
+    public class AppVersionsEntityBuilder : BaseEntityBuilder<AppVersionsEntityBuilder>
+    {
+        private const string _entityTableName = "AppVersions";
+        private readonly PrimaryKey<AppVersionsEntityBuilder> _primaryKey = new("PK_AppVersions", x => x.Id);
+
+        public AppVersionsEntityBuilder(MigrationBuilder migrationBuilder, IOqtaneDatabase database) : base(migrationBuilder, database)
+        {
+            EntityTableName = _entityTableName;
+            PrimaryKey = _primaryKey;
+        }
+
+        protected override AppVersionsEntityBuilder BuildTable(ColumnsBuilder table)
+        {
+            Id = AddAutoIncrementColumn(table,"Id");
+            Version = AddStringColumn(table,"Version", 10);
+            AppliedDate = AddDateTimeColumn(table,"AppliedDate");
+
+            return this;
+        }
+
+        public OperationBuilder<AddColumnOperation> Id { get; set; }
+
+        public OperationBuilder<AddColumnOperation> Version { get; set; }
+
+        public OperationBuilder<AddColumnOperation> AppliedDate { get; set; }
+
+    }
+}