add ability to include properties to the consumers during subscriptions

[DanielePalaia]

At the moment it is not possible to include properties to Consumers.

These properties are passed during Subscriptions and are needed to implement some functionalities like the Single Active Consumer

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.73%. Comparing base (028f7e9) to head (290aa7d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #249      +/-   ##
==========================================
+ Coverage   88.08%   89.73%   +1.64%     
==========================================
  Files          78       78              
  Lines        6742     6748       +6     
==========================================
+ Hits         5939     6055     +116     
+ Misses        803      693     -110     

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