Add custom Automator services creation

[aonez]

• Create customizable services (1.1.0)
• Bundle and install on demand predefined services (1.1.0)
• Add a services generator GUI

Enable Keka to create services with Automator, making the download of the context menu package unnecessary and the translation/installation of the service easier.

Also, such automatic creation + command line Keka support can enable for a more custom service actions (Thanks for the idea Ralph).