Add CODATA2022 module

[mikeingold]

Based on: https://www.nist.gov/publications/codata-internationally-recommended-2022-values-fundamental-physical-constants

Closes #34

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 69.84%. Comparing base (097613c) to head (3e5bfc2).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/codata2022.jl	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #39      +/-   ##
==========================================
- Coverage   77.19%   69.84%   -7.36%     
==========================================
  Files           3        4       +1     
  Lines          57       63       +6     
==========================================
  Hits           44       44              
- Misses         13       19       +6     

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[giordano]

Thanks a lot! Only a comment about the docs

[giordano]

All these codeblocks should probably be jldoctests

[mikeingold]

Done, and it caught an error where the second code block didn't have its own explicit import.

[giordano]

Thanks!