Prompt users to ask questions on stackoverflow in issue template

[Don Jayamanne (DonJayamanne)]

Fixes #797

[codecov]

Codecov Report

Merging #798 into master will decrease coverage by 0.18%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #798      +/-   ##
==========================================
- Coverage   63.26%   63.07%   -0.19%     
==========================================
  Files         257      257              
  Lines       11720    11755      +35     
  Branches     2081     2091      +10     
==========================================
  Hits         7415     7415              
- Misses       4297     4332      +35     
  Partials        8        8

Impacted Files	Coverage Δ
src/client/debugger/mainV2.ts	0% <0%> (ø)	⬆️

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[Mikhail Arkhipov (MikhailArkhipov)]

I'd add

Unable to install linter or formatter? 'No installers available'? See pip doc [...]
Windows - https://stackoverflow.com/questions/4750806/how-do-i-install-pip-on-windows
Linux -
https://www.cyberciti.biz/faq/debian-ubuntu-centos-rhel-linux-install-pipclient/
https://www.tecmint.com/install-pip-in-linux/

Python configuration issues? Please check https://code.visualstudio.com/docs/python/python-tutorial#_prerequisites