Add a troubleshooting section

[rtapella]

• Help fix common issues
• Document workarounds for known issues

[rtapella]

"I think we need to add common Error exit codes to the docs
RuntimeError: Got non-zero exit code: 143 remind us what a 143 error is?"

"143 is most likely when we lost the machine to aws spot terminations or rebalancing. "

[rtapella]

@bsatoriu input/topic suggestions welcome here

[rtapella]

branch for updates: https://github.com/MAAP-Project/maap-documentation/tree/troubleshooting-section/docs/source/troubleshooting