BUG: Update variable names for dosimeters

[jklenzing]

Description

Addresses #22

The label names for several parameters are not unique, leading to confusing info on the CDAweb search. This updates these variables to indicate which dosimeter is used.

Also updated usage of chained indices to improve compliance with pandas 3.0. Added flag to disable multi-day load tests, which is functionality not used in the current context of this software.

Also fixed the pkg_resources deprecation

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

By generating test files via scripts/netcdf_gen.py and checking the metadata in xarray.

Checklist:

• Make sure you are merging into the develop (not main) branch
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• Add a note to CHANGELOG.md, summarizing the changes