Implement DDS Participants

[irenebm]

Merge after:

• Refactor DiscoveryServerParticipant #127

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 18.56764% with 307 lines in your changes missing coverage. Please review.

Project coverage is 37.17%. Comparing base (a62ed36) to head (2644c9b).

Files with missing lines	Patch %	Lines
...cpp/participant/dds/DiscoveryServerParticipant.cpp	18.24%	99 Missing and 13 partials ⚠️
...rc/cpp/participant/dds/InitialPeersParticipant.cpp	17.64%	100 Missing and 12 partials ⚠️
...ants/src/cpp/participant/dds/CommonParticipant.cpp	16.98%	34 Missing and 10 partials ⚠️
...ants/src/cpp/participant/dds/SimpleParticipant.cpp	24.39%	27 Missing and 4 partials ⚠️
...cipants/src/cpp/participant/dds/XmlParticipant.cpp	20.00%	4 Missing and 4 partials ⚠️

Additional details and impacted files

@@                           Coverage Diff                            @@
##           feature/discovery_server_participant     #126      +/-   ##
========================================================================
- Coverage                                 37.83%   37.17%   -0.67%     
========================================================================
  Files                                       153      156       +3     
  Lines                                      6977     7333     +356     
  Branches                                   2788     2960     +172     
========================================================================
+ Hits                                       2640     2726      +86     
- Misses                                     2918     3144     +226     
- Partials                                   1419     1463      +44     

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