Document Tips for Debugging C Extensions
Quick notes in case they are helpful to others. Can move to the Wiki as well if we don't want in the standard docs
Hello @WillAyd! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:



There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2020-12-09 00:49:35 UTC Any other comments here? Otherwise plan on merging in a few days
 One question, no objections. any movement here? Been tight on time lately so closing this temporarily to clean the queue - will come back to this at a later date Getting back around to this. Since there was some confusion around gdb vs lldb I added a blurb about which one to choose when. I also made it so all of the steps are shown for both debuggers thanks @WillAyd 