Commit code for Connection Header ticket # 1542.

[wpoosanguansit]

This is a clean up pull request for Connection Header code.

[codecov-commenter]

Codecov Report

Base: 59.13% // Head: 59.23% // Increases project coverage by +0.09% :tada:

Coverage data is based on head (6a6114e) compared to base (c43bb2c). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1632      +/-   ##
==========================================
+ Coverage   59.13%   59.23%   +0.09%     
==========================================
  Files         110      111       +1     
  Lines        3940     3949       +9     
  Branches      123      117       -6     
==========================================
+ Hits         2330     2339       +9     
  Misses       1610     1610              

Impacted Files	Coverage Δ
...ttp/src/main/scala/zio/http/api/HeaderCodecs.scala	100.00% <100.00%> (ø)
...ala/zio/http/model/headers/values/Connection.scala	100.00% <100.00%> (ø)

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[jdegoes]

Thank you for this contribution!