deprecate openfe utils 3dviz in favor of gufe method

[atravitz]

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• Added a news entry

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• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.39%. Comparing base (9ae1f08) to head (106c599).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1592      +/-   ##
==========================================
- Coverage   95.46%   93.39%   -2.08%     
==========================================
  Files         174      174              
  Lines       14580    14584       +4     
==========================================
- Hits        13919    13620     -299     
- Misses        661      964     +303     

Flag	Coverage Δ
fast-tests	93.39% <100.00%> (?)
slow-tests	?

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[github-actions]

No API break detected ✅