Add all small unsigned int types, fix display for them and other enum Variant

[dr-orlovsky]

No description provided.

[codecov]

Codecov Report

Attention: 39 lines in your changes are missing coverage. Please review.

Comparison is base (28e29bf) 56.8% compared to head (e91dff3) 56.6%.

Files	Patch %	Lines
rust/src/stl.rs	0.0%	38 Missing ⚠️
rust/derive/src/params.rs	85.7%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master     #29     +/-   ##
========================================
- Coverage    56.8%   56.6%   -0.2%     
========================================
  Files          23      23             
  Lines        2672    2692     +20     
========================================
+ Hits         1519    1524      +5     
- Misses       1153    1168     +15     

Flag	Coverage Δ
rust	56.6% <15.2%> (-0.2%)	⬇️

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