Added support for HTTP proxy with hyper-proxy2

[aviramha]

Closes #1361

[clux]

Thanks a lot! Love how simple this becomes on our end.

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 74.8%. Comparing base (a6f4337) to head (0daf094).

❗ Current head 0daf094 differs from pull request most recent head 3b0c3dc

Please upload reports for the commit 3b0c3dc to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1496     +/-   ##
=======================================
- Coverage   74.9%   74.8%   -0.0%     
=======================================
  Files         78      78             
  Lines       6806    6808      +2     
=======================================
  Hits        5091    5091             
- Misses      1715    1717      +2     

Files	Coverage Δ
kube-client/src/client/builder.rs	61.4% <40.0%> (-1.6%)	⬇️

... and 1 file with indirect coverage changes