Cleanup documentation

[stewartboyd119]

1. Remove reference to zlog (zillow internal logging implementation)
2. Added worker-deadletter and worker-delay
3. Add maked targets for new examples
4. Updated readme.md
5. Updated DeadLetterTopicConfig to honor parent consumer config's clientid

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 93.86%. Comparing base (a16d04c) to head (e456291).

Files	Patch %	Lines
work.go	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #7      +/-   ##
==========================================
+ Coverage   93.77%   93.86%   +0.08%     
==========================================
  Files          17       17              
  Lines        1286     1288       +2     
==========================================
+ Hits         1206     1209       +3     
+ Misses         53       52       -1     
  Partials       27       27              

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