fix: add logger to client

[sivchari]

This PR

Added logger field to client to output to somewhere in the future.

Related Issues

Notes

Follow-up Tasks

How to test

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.08%. Comparing base (58a2a17) to head (451ec0c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
openfeature/client.go	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #337      +/-   ##
==========================================
- Coverage   88.13%   88.08%   -0.06%     
==========================================
  Files          14       14              
  Lines        1408     1410       +2     
==========================================
+ Hits         1241     1242       +1     
- Misses        143      144       +1     
  Partials       24       24              

Flag	Coverage Δ
e2e	88.08% <66.66%> (-0.06%)	⬇️
unit	88.08% <66.66%> (-0.06%)	⬇️

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