Populate Results Table from Plot ROIs.java

[antinos]

Changed the default behaviour of Plot.getResultsTable() to allow ROI encompassing plot XY datapoints to be output to a results table using the 'List' button. When no ROI is present, the orginal getResultsTable code will run. I don't think it's ideal to have renamed the original method so that my code becomes the default, but I thought this merge request might be a good way for an account admin to test my concept for a more interactive ImageJ plot window. The code in this merge works for me, so you also have the option to change the original method name back yourself (or to recommend that I do so) before maybe moving this commit forward. Finally, in case it isn't clear from the way I am handling myself here, I am not a programmer by profession and am not used to git merging or normal git etiquette. Therefore, apologies if I am doing something wrong.

Kind regards.

[imagesc-bot]

This pull request has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/automating-data-point-extraction-from-a-graph-in-imagej-fiji/96922/5