Proposal of New Doxygen file for autodocumentation of hardware architectures

Hi folks, I started a documentation proposal / proof of concept for the hardware architectures cpp code base.

It revealed a lot of very cool already auto-documented third party doxygen comments now available from a consolidated index html page.

Out-of-source cleaner build:
it is all contained solely in the new documentation folder inside the hardware folder including the doxygen config file (Doxyfile) to avoid spamming the root.

Please check it out and let me know if it makes sense to you:

To generate the doc, you must have doxygen installed and simply run:

Inside the documentation folder.

Then open index.html in the documentation/html folder

snapshot attached too