Binary search the input domain

[JSorngard]

This will speed up the execution speed for larger inputs, but may slow it down for smaller ones. When I have implemented all functions in this way I will do thorough benchmarking.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5067593) to head (c977775).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #329   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines         1506      1506           
=========================================
  Hits          1506      1506           

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[JSorngard]

• sp_lambert_w0 ~20% faster.
• lambert_w0f ~10% faster.
• sp_lambert_wm1 ~2% slower.
• lambert_wm1f ~3% faster.