Pydantic v2

[d-chambers]

Description

This PR adds support for pydantic V2. I mainly just got it working, there are other pydanitic optimizations which can be made and always enumerable cleanups.

Checklist

I have (if applicable):

• referenced the GitHub issue this PR closes.
• documented the new feature with docstrings or appropriate doc page.
• included a test. See testing guidelines.
• your name has been added to the contributors page (docs/contributors.md).
• added the "ready_for_review" tag once the PR is ready to be reviewed.

[codecov]

Codecov Report

Merging #197 (566ce00) into master (d9ce036) will decrease coverage by 0.96%.
The diff coverage is 97.46%.

@@            Coverage Diff             @@
##           master     #197      +/-   ##
==========================================
- Coverage   98.63%   97.67%   -0.96%     
==========================================
  Files          74       74              
  Lines        5557     5557              
==========================================
- Hits         5481     5428      -53     
- Misses         76      129      +53     

Flag	Coverage Δ
unittests	97.67% <97.46%> (-0.96%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
dascore/utils/hdf5.py	89.89% <85.71%> (ø)
dascore/utils/models.py	97.22% <91.66%> (-1.06%)	⬇️
dascore/core/coordmanager.py	100.00% <100.00%> (ø)
dascore/core/coords.py	100.00% <100.00%> (ø)
dascore/core/schema.py	94.73% <100.00%> (-5.27%)	⬇️
dascore/io/core.py	100.00% <100.00%> (ø)
dascore/io/indexer.py	96.15% <100.00%> (ø)
dascore/io/pickle/core.py	100.00% <100.00%> (+6.66%)	⬆️
dascore/io/quantx/utils.py	98.64% <100.00%> (ø)
dascore/io/tdms/utils.py	93.00% <100.00%> (ø)
... and 6 more

... and 5 files with indirect coverage changes

[d-chambers]

Looking at the coverage report, I am nearly certain the coverage report is wrong here. I am going to merge for now so I can work on other features that depend on this. Will fix coverage later if this turned out to be correct.