Add flowmetrics sample for workload flow matrix

[jotak]

Workload flows matrix for TCP/SYN traffic, including destination port, with labels remapped for focusing on incoming or outgoing traffic

[openshift-ci]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.56%. Comparing base (bd9921d) to head (85e4c1d).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2113      +/-   ##
==========================================
- Coverage   73.58%   73.56%   -0.03%     
==========================================
  Files          80       80              
  Lines        9064     9064              
==========================================
- Hits         6670     6668       -2     
- Misses       1990     1991       +1     
- Partials      404      405       +1     

Flag	Coverage Δ
unittests	73.56% <ø> (-0.03%)	⬇️

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see 1 file with indirect coverage changes

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