Added a new simple-stream-service example

[daveshanley]

This sends out a random word on 'simple-stream' every 1 second.

Signed-off-by: Dave Shanley dshanley@vmware.com

[codecov-commenter]

Codecov Report

Merging #23 (32f432a) into main (47a1f3e) will decrease coverage by 0.11%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
- Coverage   97.45%   97.34%   -0.12%     
==========================================
  Files          28       28              
  Lines        1805     1805              
==========================================
- Hits         1759     1757       -2     
- Misses         46       48       +2     

Flag	Coverage Δ
unittests	97.34% <ø> (-0.12%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
service/service_registry.go	94.44% <0.00%> (-2.78%)	⬇️

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[jooskim]

LGTM