Add brotli compression (#2646)

[987Nabil]

@jdegoes I think the brotli4j dependency is okay. It would go to the netty backend module once we split zio-http core and netty backend.

fixes #2646 /claim #2646

[codecov-commenter]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (21989c9) 64.55% compared to head (838430c) 64.44%.

Files	Patch %	Lines
...o-http/shared/src/main/scala/zio/http/Server.scala	35.71%	9 Missing :warning:
.../main/scala/zio/http/netty/model/Conversions.scala	28.57%	5 Missing :warning:

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2673      +/-   ##
==========================================
- Coverage   64.55%   64.44%   -0.11%     
==========================================
  Files         145      145              
  Lines        8607     8620      +13     
  Branches     1521     1532      +11     
==========================================
- Hits         5556     5555       -1     
- Misses       3051     3065      +14     

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[987Nabil]

@jdegoes I am not sure what the problem with the shading is. Never had to configure it before. Can you give me a hint? The build error is not very helpful.

[jdegoes]

@987Nabil I have not used that setting before, I just know why it's used and how it works.

[jdegoes]

@987Nabil Please re-open when build is passing. 🙏