title: Symfony 4 doctrine - create entity and controller for new database table
body: <p>I am very new to Symfony and Doctrine.<br>
  I needed to add a new table to the existing database and i would like to create the entity and controller for this new table.
  Is there a command to do this for just one table?  I have tried the following command:</p>
  
  <pre><code>bin/console doctrine:mapping:convert --from-database annotation src/CRM/CRMBundle/Entity/ --force
  </code></pre>
  
  <p>When i run this command, all of the entities are recreated and the namespace is removed.  I am only interested in creating 1 new entity and controller for the new table.  Is this possible?  Is there a similar solution if i would like to add columns to an existing table that already has an Entity and Controller created?</p>