[#264] cxx bindings for attributes

[elfenpiff]

Adds the c/c++ binding for attributes and integrates them into the service builder.

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References

Relates to #264

[codecov]

Codecov Report

Attention: Patch coverage is 22.22222% with 14 lines in your changes missing coverage. Please review.

Project coverage is 79.07%. Comparing base (a628ba5) to head (ce40c02).
Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
iceoryx2/src/service/attribute.rs	22.22%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #549      +/-   ##
==========================================
- Coverage   79.11%   79.07%   -0.04%     
==========================================
  Files         203      203              
  Lines       25132    25146      +14     
==========================================
+ Hits        19882    19885       +3     
- Misses       5250     5261      +11     

Files with missing lines	Coverage Δ
iceoryx2/src/service/attribute.rs	84.94% <22.22%> (-15.06%)	⬇️

... and 3 files with indirect coverage changes

[elBoberido]

Food for thought. For certification we might need to return an Optional<AttributeView> to not have to terminate for out of bounds access.

But we need to review the whole API for this scenarios, so I think it's fine to stay as is for now.

[elfenpiff]

Or we work with begin() and end() and iterators or for_each and for.

[elBoberido]

Well, that's a different use case. If someone really wants to access element at index N, then it only works by checking the size before using at ... but that's a different philosophical question