Add wandb logging to rsmtool

[tamarl08]

Add option to log to W&B from rsmtool.py.

Note: I didn't add this to unit tests since it only allows a very shallow testing. Instead I added a tutorial config that logs to wandb and verified that everything works.
See the results of the most recent run here or try it yourself!

[desilinguist]

Aha!

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (1e48664) 95.87% compared to head (0b3760e) 95.87%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #617   +/-   ##
=======================================
  Coverage   95.87%   95.87%           
=======================================
  Files          59       59           
  Lines        9300     9339   +39     
=======================================
+ Hits         8916     8954   +38     
- Misses        384      385    +1     

Impacted Files	Coverage Δ
rsmtool/configuration_parser.py	88.44% <100.00%> (+0.11%)	⬆️
rsmtool/rsmtool.py	99.23% <100.00%> (+0.10%)	⬆️
rsmtool/utils/constants.py	100.00% <100.00%> (ø)
rsmtool/writer.py	96.36% <100.00%> (+0.36%)	⬆️
tests/test_configuration_parser.py	99.80% <100.00%> (+<0.01%)	⬆️
tests/test_experiment_rsmtool_4.py	97.18% <100.00%> (+0.51%)	⬆️

... and 1 file with indirect coverage changes

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[desilinguist]

I think we will need to add tests, @tamarl08. That's not a minor change in coverage.

[tamarl08]

Thanks for the review @desilinguist @mulhod! I addressed all your comments, leaving the dependency as it is for now.

[desilinguist]

Okay, just tested this. Couple of things that we should add to the documentation:

1. I hadn't set up my W&B API key and so I just got this weird menu asking me to choose one of three options (create account, use existing account etc.). We should add a link to Step 2 and tell folks that they should have completed this step before they start using W&B.

2. If you enable W&B logging, the rsmtool run will take significantly longer due to the network traffic being sent to W&B. We should mention this.

Both of these can go under an "Important" note in the use_wandb section of the documentation.

[desilinguist]

LGTM, thanks!! 🎉