SmartSim logger documentation

[amandarichardsonn]

This PR will merge the SmartSim logger documentation into the main SmartSim documentation branch.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (79e8ce5) 90.23% compared to head (a800c05) 90.47%.
Report is 7 commits behind head on smartsim-docs-refresh.

Additional details and impacted files

@@                    Coverage Diff                    @@
##           smartsim-docs-refresh     #431      +/-   ##
=========================================================
+ Coverage                  90.23%   90.47%   +0.24%     
=========================================================
  Files                         60       60              
  Lines                       3859     3738     -121     
=========================================================
- Hits                        3482     3382     -100     
+ Misses                       377      356      -21     

see 29 files with indirect coverage changes

[mellis13]

It's great to see some clearer docs on the logging API. Just a couple of comments/questions to address, but nothing significant.

[mellis13]

Very small questions/comments. Otherwise very close to merging.

[mellis13]

LGTM -- thanks!