Add zap integration

[ribice]

Resolves #340

TODO:

• Docs Add docs for go-zap sentry-docs#12464
• Add more tests
• Add more examples

[codecov]

Codecov Report

Attention: Patch coverage is 57.37052% with 107 lines in your changes missing coverage. Please review.

Project coverage is 82.44%. Comparing base (f2d4348) to head (fede5d6).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
zap/core.go	45.94%	65 Missing and 15 partials ⚠️
zap/sentryzap.go	63.82%	16 Missing and 1 partial ⚠️
zap/field.go	0.00%	4 Missing ⚠️
zap/frame_matcher.go	71.42%	4 Missing ⚠️
zap/util.go	94.73%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #958      +/-   ##
==========================================
- Coverage   83.61%   82.44%   -1.17%     
==========================================
  Files          49       54       +5     
  Lines        5133     5384     +251     
==========================================
+ Hits         4292     4439     +147     
- Misses        684      773      +89     
- Partials      157      172      +15     

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