[AddonManager] Add YAML Workspace logo
Created by: luzpaz
Relevant thread: https://forum.freecadweb.org/viewtopic.php?f=9&t=36556&p=314729#p314729
Created by: luzpaz
Relevant thread: https://forum.freecadweb.org/viewtopic.php?f=9&t=36556&p=314729#p314729