Add to_string functions

[mborland]

Closes: #317

[cppalliance-bot]

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2026-02-10 18:55:15 UTC

[pps83]

I'd still add std::to_string for native types. This code basically checks it against charconv, but it really should match std::to_string for int types (this would also catch bugs like the one charconv had)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.03%. Comparing base (eabfff6) to head (0162243).
⚠️ Report is 11 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #324   +/-   ##
========================================
  Coverage    99.02%   99.03%           
========================================
  Files           61       63    +2     
  Lines         5318     5369   +51     
  Branches      1643     1661   +18     
========================================
+ Hits          5266     5317   +51     
  Misses          21       21           
  Partials        31       31           

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