Adding stateruleparser for converting .xml to .conf

[stefi07]

Add utility to parse drawio state tree diagrams into .conf inputs for stateRuleEngine.

[stefi07]

To test, run python -m stateruletree stateruletree/examples/fwfpm_stagesci1.drawio in dir utils/stateruletree.

To install, run make install in dir utils/stateruletree (this symlinks to /opt/MagAOX/bin, similar to pipinstall in pythonApp.mk).

[stefi07]

I've gone through the code to fix the issues flagged by Codacy's analysis. The remaining failures are caused by pairs of mutually exclusive pydocstyle rules being active simultaneously: D212 vs D213 (whether to start docstring summary on first line or not) and D203 vs D211 (blank line before class docstring). These rules directly contradict each other, so no code change can fix both at once. I have deferred to following the numpy convention (D211 and D212), since that is what the majority of the existing code already uses.

To resolve the remaining Coday issues, D203 and D213 need to be disabled in Code Patterns, in the Codacy settings.

[jaredmales]

This is great. Thank you.