feat!: replaced EvaluationOptions with variadic option setter in client functions

[skyerus]

Signed-off-by: Skye Gill [email protected]

[codecov-commenter]

Codecov Report

Merging #77 (4ff8491) into main (aa59b35) will decrease coverage by 4.16%.
The diff coverage is 64.70%.

@@            Coverage Diff             @@
##             main      #77      +/-   ##
==========================================
- Coverage   84.30%   80.14%   -4.17%     
==========================================
  Files           6        6              
  Lines         376      418      +42     
==========================================
+ Hits          317      335      +18     
- Misses         54       70      +16     
- Partials        5       13       +8     

Impacted Files	Coverage Δ
pkg/openfeature/openfeature.go	90.69% <ø> (-0.97%)	⬇️
pkg/openfeature/client.go	78.52% <64.70%> (-5.55%)	⬇️

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[toddbaert]

This looks good, but will conflict with #75 I think.

I think you might want to merge that first, then absorb the changes here. Once you do, don't forget to update the godoc.