Add basic Literal Validator

[jenshnielsen]

Add a validator that allows you to validate against typing.Literal

• Changelog entry

[codecov]

Codecov Report

Attention: Patch coverage is 56.25000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 59.92%. Comparing base (6c5f508) to head (7b04e57).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/qcodes/validators/validators.py	56.25%	7 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7009   +/-   ##
=======================================
  Coverage   59.92%   59.92%           
=======================================
  Files         342      342           
  Lines       31411    31426   +15     
=======================================
+ Hits        18823    18832    +9     
- Misses      12588    12594    +6     

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[astafan8]

newsfragment ? :)

[jenshnielsen]

newsfragment ? :)

Yes see todo in description :)