New interface for fslcpgeom

[mick-d]

No description provided.

[mick-d]

@satra I had to spend quite some time cleaning everything up as I coulnd't get rid of all the test files. Everything is good now.

To ensure that no input files are overwritten (more precisely dest_file) I had to copy dest_file locally (to the cwd) and then modify it there. I am not sure this the most elegant implementation so don't hesitate to let me know if there is a better solution. In any case I tested it and it works fine.

[satra]

you could add another two pieces of metadata to this:
output_name='out_file', name_template='%s_newhd'

and then remove all three functions (run_interface, gen_filename, list_outputs) from interface

[satra]

oops. this may not work for this scenario where dest_file is an existing file.

[mick-d]

I see. So the current implementation is ok?

[mick-d]

@satra Done