script to create acro object post-hoc from directory of outputs

[Jim-smith]

Idea is that if user doesn't use acro and just produces a directory of output files, we can run a script that creates an acro object, ads the files one-by-one as unsupported types, asks for inputs, and then calls finalise so at least it can be picked up by the viewer tool.

Might need see somehow if it is being run in 'interactive mode' to know whether to prompt for descriptions of the files or not