Print connections and stream number for more useful throughput data

[imorlxs]

Description

In #5023, PrintThroughput was changed and PrintConnThroughput was added. This add the number of connections and streams to the -ptput argument, which prints the sum of the throughputs.

Testing

Do any existing tests cover this change? Are new tests needed?

Documentation

The documentation has to be updated. The -pctput argument is not documented.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.06%. Comparing base (186accc) to head (d602bb5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5037      +/-   ##
==========================================
- Coverage   86.28%   86.06%   -0.23%     
==========================================
  Files          59       59              
  Lines       18011    18011              
==========================================
- Hits        15541    15501      -40     
- Misses       2470     2510      +40     

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