Migrate SwingGroupingInputHarvester to scijava-ui-swing

[imagejan]

This is a reminder to pleeease migrate SwingGroupingInputHarvester to scijava-ui-swing 😃

See scijava/scijava-common#310 (comment).

[kephale]

@ctrueden This is likely to fall off of my radar. Also, I'm unsure how we want to label this w.r.t. 1.0.0

[ctrueden]

I guess I should just finish it ASAP, huh? It seems like several people want/wanted this, and even worked on it in scijava/scijava-common#310, but no one completed the work and filed the PR upstream.

[ctrueden]

Closing in favor of scijava/scijava-ui-swing#81.

[ctrueden]

There you go, not your problem anymore @kephale!