[LibZlib] expose compression strategy option

[nhz2]

This PR adds the strategy keyword argument to ZlibEncodeOptions, DeflateEncodeOptions, and GzipEncodeOptions to expose zlib's compression strategy (Z_DEFAULT_STRATEGY, Z_FILTERED, Z_HUFFMAN_ONLY, Z_RLE, Z_FIXED).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.11%. Comparing base (a65bf67) to head (e4b13a2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #89      +/-   ##
==========================================
+ Coverage   82.73%   85.11%   +2.38%     
==========================================
  Files           4        4              
  Lines         139      215      +76     
==========================================
+ Hits          115      183      +68     
- Misses         24       32       +8     

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