Replace lists by dicts

[samwaseda]

This was one of the first changes I wanted to make, but the code was written in such a complex way that I couldn't figure out properly how to do it. I guess there's no doubt that replacing the list by a dict only makes it safer.

[github-actions]

👈 Launch a binder notebook on branch pyiron/pyiron_rdm/use_dict

[codecov]

Codecov Report

❌ Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 9.07%. Comparing base (4d3ddad) to head (6e4aa12).

Files with missing lines	Patch %	Lines
pyiron_rdm/classic.py	0.00%	12 Missing ⚠️
pyiron_rdm/ob_upload.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main     #51      +/-   ##
========================================
+ Coverage   9.06%   9.07%   +0.01%     
========================================
  Files          8       8              
  Lines       1655    1653       -2     
========================================
  Hits         150     150              
+ Misses      1505    1503       -2     

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