Examples from P2996 - Reflection for C++26

[vsavkov]

The PR provides:

• docker images with ready to use clang compiler front-end implementing experimental support for ISO C++ proposal P2996 ("Reflection for C++26")
• instructions how to build clang compiler supporting P2996 on macOS M-series
• implementation of examples from P2996.

[zebullax]

Thanks for the submission
I ll have a deeper look but the target branch purpose is likely not what we want, it contains no runnable, scripts or code and if we were to merge this , then that will no longer be the case.
Maybe a dedicated branch for Docker scaffolding and usage that we would link to from purpose is better suited here.

I ll check on our end some detail too 🙇

[vsavkov]

p2996_examples might be a candidate for the branch name to merge into.
Let me know when/if the branch will be created.