title: Check Table Exist Before Create Table On FluentMigrator
body: <p>I'm looking for a way to write a extension method for fluent migrator check before create table, something like this </p>
  
  <pre><code>Schema.TableIfNotExist("table").InSchema("dbo").WithColumn("Id").AsInt32().NotNullable()
  </code></pre>
  
  <p>is it possible to write a extension method ?</p>