Add cross section plots

Describe the New Feature

Add a feature to produce cross sections plots, animated as a time series. Examples can be found here from CIMH. Fields plotted include RH & Wind barbs, and vertical velocity.

Not sure if it's useful, but WRF-python has a function for this described here.

Acceptance Testing

Variables from WRF netcdf output files will need to be used for this feature.
Tests will include testing of plotting feature.

Time Estimate

2-3 days

Sub-Issues

Consider breaking the new feature down into sub-issues.

• Add a checkbox for each sub-issue here.

Relevant Deadlines

NONE.

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New Feature Checklist

• Complete the issue definition above, including the Time Estimate and Funding source.
• Fork this repository or create a branch of develop.
  Branch name: feature_<Issue Number>/<Description>
• Complete the development and test your changes.
• Add/update log messages for easier debugging.
• Add/update tests.
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• Iterate until the reviewer(s) accept and merge your changes.
• Delete your fork or branch.
• Close this issue.

Start by reviewing the linked WRF-python cross-section example and identifying how variables from WRF NetCDF output are currently accessed. Define the plotting and animation scope for RH, wind barbs, and vertical velocity, then add plotting tests that demonstrate the requested cross-section time series.