This is a simple plugin that fits table columns to content in InDesign. It works by adjusting the column width and checking to see if any column content overflowed.
You can install this plugin directly from Adobe Exchange: https://exchange.adobe.com/apps/cc/87ac7562/table-column-autosize
If you found your way here because something is not working correctly, please add an issue explaining your problem here.
This plugin is currently optimized for text, so expected behavior is not guaranteed for cells with graphical content.