Add name property to ModelComponents, DiffusionModels and ComponentCollections

[henrikjacobsenfys]

This is needed for migrating to using EasyList #117 #70

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.11%. Comparing base (152c5a0) to head (ceb4f5f).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #178      +/-   ##
===========================================
- Coverage    98.12%   98.11%   -0.01%     
===========================================
  Files           45       45              
  Lines         2874     2872       -2     
  Branches       511      514       +3     
===========================================
- Hits          2820     2818       -2     
  Misses          34       34              
  Partials        20       20              

Flag	Coverage Δ
integration	48.01% <45.23%> (-0.15%)	⬇️
unittests	98.11% <100.00%> (-0.01%)	⬇️

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[rozyczko]

• ComponentCollection.__init__ still has display_name defaulting to a string, which is inconsistent with the rest, where it defaults to None (or name)

• DiffusionModelBase has a separate __repr__ that doesn't include name

[rozyczko]

EasyDynamicsModelBase.__init__ already calls self._unit = _validate_unit(unit), so the second assignment overwrites it without validation. It's better to remove this assignment entirely.