Expose human readable partition type name attribute

[JSCU-CNI]

This PR exposes the attributes type_str and type_name of the Partition class which improves the human identification of partitions and volumes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.62%. Comparing base (711c231) to head (7564f86).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #60   +/-   ##
=======================================
  Coverage   77.62%   77.62%           
=======================================
  Files          29       29           
  Lines        2337     2337           
=======================================
  Hits         1814     1814           
  Misses        523      523           

Flag	Coverage Δ
unittests	77.62% <100.00%> (ø)

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