Add Lock-free Queue (backport #253)

[mergify]

Fixes #14

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This is an automatic backport of pull request #253 done by Mergify.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.72%. Comparing base (695a6c1) to head (7e0b457).
Report is 1 commits behind head on jazzy.

Additional details and impacted files

@@            Coverage Diff             @@
##            jazzy     #270      +/-   ##
==========================================
+ Coverage   69.13%   70.72%   +1.58%     
==========================================
  Files           8        9       +1     
  Lines         499      526      +27     
  Branches       86       87       +1     
==========================================
+ Hits          345      372      +27     
  Misses         99       99              
  Partials       55       55              

Flag	Coverage Δ
unittests	70.72% <100.00%> (+1.58%)	⬆️

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Files with missing lines	Coverage Δ
include/realtime_tools/lock_free_queue.hpp	100.00% <100.00%> (ø)