Create ToolBar from directory

In another thread someone was looking for a script that would add all scripts in a directory to a toolbar as custom actions. It was an interesting idea and I had a few minutes, but the request was off topic for the thread, so I am posting my take on it here.

Given the file structure

• /data/Omni Flux/Scripts/Cool Things
  • Do Cool Thing.dsb
  • Do Cool Thing.dsb.png
  • Do Something Else.dse
  • Do Something Else.png
  • Fix It.dsa
  • Fix It.dsa.png

Run the attached script with the parameter '/data/Omni Flux/Scripts/Cool Things' and it will create a new ToolBar named "Cool Things" with the CustomAction's "Do Cool Thing", "Do Something Else", and "Fix It" with their associated icons.