Feedback from actions

[martindurant]

When you "make" an artefact or add a project type (#34 ), we need to think about what to return to the caller. We have options, for make:

• the logs
• the process/files/other resource created

For create:

• the new project instance (or update the original one)
• files created

[martindurant]

This issue requires a short discussion to decide between the options above, and then a short implementation can follow.