Expand troubleshooting for issues on Windows with python in git bash

[svenvanderburg]

The part https://carpentries-incubator.github.io/python-intermediate-development/common-issues.html#python-hangs-in-git-bash can be extended with the following related problem:

Does the file remain empty when using winpty python -m pip freeze > requirements.txt? Adjust the alias to alias python='winpty -Xallow-non-tty python'

• If that in turn adds strange characters, extend it further to alias python='winpty -Xallow-non-tty -Xplain python'
• Solution source

[anenadic]

We have a solution for this under 'Commons issues and fixes': https://carpentries-incubator.github.io/python-intermediate-development/common-issues.html#python-hangs-in-git-bash but should expand with those extra commands.

[svenvanderburg]

I see. I think only the second part is relevant then. I will adapt the issue to reflect this.