Use heuristic file to specify metric arguments

[m-miedema]

Detailed Description

It would be nice to run phys2denoise to calculate several metrics at once with e.g. different window sizes in the same function call. We should discuss whether we are interested in implementing this.

Context / Motivation

It would be more reproducible to set up a heuristic with metric parameters. It would also make for a tidier CLI!

Possible Implementation

See e.g. phys2bids heuristic file. Some previous discussion at brainhacks by @me-pic and @m-miedema may be useful, if resurrected.