Implement and test from_chars()

[ckormanyos]

In this PR, we handle implementation and test of from_chars(), as discussed in #398.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (df1fa53) 100.0% compared to head (7183be8) 100.0%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #400   +/-   ##
=======================================
  Coverage   100.0%   100.0%           
=======================================
  Files          39       39           
  Lines        3600     3604    +4     
=======================================
+ Hits         3600     3604    +4     

Files	Coverage Δ
math/wide_integer/uintwide_t.h	100.0% <100.0%> (ø)
test/test.cpp	100.0% <ø> (ø)
test/test_uintwide_t_edge_cases.cpp	100.0% <100.0%> (ø)

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[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud