Camel Case to Snake Case

[amandarichardsonn]

This PR converts Camel case files to Snake case.

[codecov]

Codecov Report

Attention: Patch coverage is 85.14851% with 15 lines in your changes missing coverage. Please review.

Project coverage is 43.95%. Comparing base (cce16e6) to head (f218598).
Report is 19 commits behind head on smartsim-refactor.

Files with missing lines	Patch %	Lines
smartsim/_core/launcher/dragon/dragon_backend.py	0.00%	5 Missing ⚠️
smartsim/_core/launcher/dragon/dragon_connector.py	16.66%	5 Missing ⚠️
smartsim/entity/ensemble.py	0.00%	1 Missing ⚠️
smartsim/entity/entity.py	50.00%	1 Missing ⚠️
smartsim/experiment.py	50.00%	1 Missing ⚠️
smartsim/launchable/base_job.py	0.00%	1 Missing ⚠️
smartsim/launchable/mpmd_job.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##           smartsim-refactor     #711      +/-   ##
=====================================================
+ Coverage              40.45%   43.95%   +3.49%     
=====================================================
  Files                    110      110              
  Lines                   7326     7133     -193     
=====================================================
+ Hits                    2964     3135     +171     
+ Misses                  4362     3998     -364     

Files with missing lines	Coverage Δ
smartsim/_core/__init__.py	100.00% <100.00%> (ø)
smartsim/_core/arguments/shell.py	100.00% <100.00%> (ø)
smartsim/_core/commands/__init__.py	100.00% <100.00%> (ø)
smartsim/_core/commands/command_list.py	95.00% <ø> (ø)
smartsim/_core/commands/launch_commands.py	100.00% <100.00%> (ø)
smartsim/_core/control/controller.py	16.35% <100.00%> (+1.17%)	⬆️
smartsim/_core/control/job_manager.py	22.92% <100.00%> (ø)
smartsim/_core/control/preview_renderer.py	41.33% <100.00%> (ø)
smartsim/_core/launcher/__init__.py	100.00% <100.00%> (ø)
smartsim/_core/launcher/dragon/dragon_launcher.py	27.52% <100.00%> (ø)
... and 47 more

... and 3 files with indirect coverage changes

[mellis13]

LGTM -- thank you!