Support "open with" functionality from the desktop

Working on a Mac, if I select a scan results JSON file in a Finder window, and then initiate the "Open With" option, I do not see ScanCode Workbench in the list of choices presented to me. if I then select the "Other..." option from that list, I get a dialog with all the available applications that I can try, but ScanCode-Workbench.app is greyed-out and I cannot choose it.

I think that it would be super-useful if I were able to open+import a JSON file directly from the desktop to ScanCode-Workbench, in this case using the Mac Finder. I am assuming (although I have not yet confirmed it) that I would have a similar experience using Windows or a LInux desktop and that support for those platforms would be great as well.