Introduce `atomic` type for iceoryx

[elfenpiff]

Brief feature description

Our Atomic* strategy has currently the problems that:

• on 32-bit AtomicU64 is not available, not even with a mutex like in the C++ STL
• cannot be tested with loom
• that all atomic do not support other types with the same alignment/size that are not provided by the default types
• they cannot be overloaded for advanced error handling strategies like fail in a compare-exchange loop

The new atomic shall be exchangeable via feature flags.

ToDo

• [x] Implement atomic
• [ ] add feature flag
• [ ] Integrate atomic in iceoryx so that everything uses the atomic