scripts: allow metrics filtering by labels in metrics_viz.py

[algorandskiy]

Summary

Updates to heapwatch tooling for metrics analysis:

1. Allow tags filters in metrics_viz.py
2. Support repeated tag values
3. Allow heapwatch to enable mutex and blocking profile

Test Plan

This allows to run aggs/viz scripts against high-freq scrapped metrics by heapwatch tooling like this

python3 ./test/heapwatch/metrics_viz.py -d /data/networks/p2p-200-1/metrics/500x15 libp2p_rcmgr_streams --nick-re 'name_n\d+' -s html -t protocol=/meshsub/1.1.0 -t protocol=/algorand-ws/1.0.0

and get subset of libp2p_rcmgr_streams values to look at:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.19%. Comparing base (66b87dc) to head (60e4f42).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6125      +/-   ##
==========================================
+ Coverage   56.17%   56.19%   +0.01%     
==========================================
  Files         494      494              
  Lines       69931    69931              
==========================================
+ Hits        39286    39297      +11     
+ Misses      27966    27957       -9     
+ Partials     2679     2677       -2     

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[gmalouf]

One question, but fine with it overall.