Refactor Serialization

[elBoberido]

Brief feature description

The current cxx::Serialization massively uses std::string. This shall be solved by a refactoring.

Detailed information

To get rid of std::string in our code base, the cxx::Serialization needs to be refactored. Additionally, it should be possible to serialize into a binary format to speed things up and potentially reduce the serialized data size.

This will partly solve #260

Tasks:

• [ ] create design document
• [ ] implement cxx::SerDe
• [ ] replace cxx::Serialization with cxx::Serde

[elBoberido]

@Dennis40816 this is the corresponding issue for the serialization refactoring.

Some years ago I created a small proof of concept. You can find the commit here -> https://github.com/elBoberido/iceoryx/commit/839a934b8902b12ceb47b1ee595605843dde1a1d

I'm a bit busy today but you can have a look at that code and try to understand what was in my mind :)