Adding ArgumentDefaultsHelpFormatter to EntryPoint.parser

[drewj-tp]

What is the change? Why is it being made?

Helps show more information about the default value for a given argument. For example, from the output of armi vis-file -h

  --format, -f FORMAT   Output format. Supported formats: `vtk` and `xdmf` (default: vtk)
  --nodes NODES         An optional list of time nodes to include. Should look like `(1,0)(1,1)(1,2)`, etc (default: None)
  --max-node MAX_NODE   An optional (cycle,timeNode) tuple to specify the latest time step that should be included (default: None)
  --min-node MIN_NODE   An optional (cycle,timeNode) tuple to specify the earliest time step that should be included (default: None)

Other cases where this may be useful:

armi compare -h
[...]
  --tolerance TOLERANCE
                        If a test database entry differs by more than this percent from the reference database, then it will be marked as a difference between the two databases. (default: 0.01)
  --weights [WEIGHTS ...]
                        Period separated key/value pairs for database table weights (default: None)
  --exclude EXCLUDE [EXCLUDE ...]
                        Patterns for parameters to ignore in comparisons (default: ('^.*/minutesSinceStart$', '^.*/maxProcessMemoryInMB$', '^.*/minProcessMemoryInMB$', '^.*/serialNum$',
                        '^.*/temperatureInC$', '^.*/volume$', '^.*/layout/temperatures$'))

The armi submit-suite has a runtime dependent default for --suiteDir (current working directory) that also nicely populates

SCR Information

Change Type: trivial

One-Sentence Rationale: Plugins can have complicated, run time dependent defaults and this helps automatically display them

One-line Impact on Requirements: NA

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Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify any new/changed code.
• The documentation is still up-to-date in the doc folder.
• The code style follows good practices.
• The dependencies are still up-to-date in pyproject.toml.

[opotowsky]

I'm a fan for more CLI help info!

[opotowsky]

testing this, it's glorious. why is this not the default argparse behavior, grumble grumble.