ucon#156: introduces Dimension.ount

[withtwoemms]

closes #156

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.60%. Comparing base (4e8ba25) to head (872b1cc).

❗ There is a different number of reports uploaded between BASE (4e8ba25) and HEAD (872b1cc). Click for more details.

HEAD has 6 uploads less than BASE

Flag	BASE (4e8ba25)	HEAD (872b1cc)
	8	2

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #157      +/-   ##
==========================================
- Coverage   87.34%   77.60%   -9.74%     
==========================================
  Files          13       13              
  Lines        2149     2139      -10     
  Branches      441      441              
==========================================
- Hits         1877     1660     -217     
- Misses        184      399     +215     
+ Partials       88       80       -8     

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