RSA, Polyglot and Descriptor Generation

For our RSA to be more successful, we should generate descriptor from the more readable header file automatically and make RSA available to other languaes like javascript and Java. Of course these should belong to another extended discussion.

_Originally posted by @PengZheng in https://github.com/apache/celix/pull/544#discussion_r1187123749_

Indeed the future or RSA, polyglot and descriptor gen is more a future discussion.
Note that I did some - small - experimentation with libclang to parse remote service header and generate descriptors.
So I think this is feasible, but requires effort. And then maybe use something like python pycparser.

_Originally posted by @pnoltes in https://github.com/apache/celix/pull/544#discussion_r1187710575_