Auto-generate ammer definitions

[Aurel300]

It would be nice to have tools which could detect which methods and variables should be declared in the ammer library definition. Possible methods:

• parse doxygen annotations in header(s)
• list symbols defined in the compiled dynamic library - loses information about opaque types/pointers; no defines
• parse header looking for a particular pattern (e.g. LUA_API in lua)
• https://github.com/eqrion/cbindgen

All of this can go horribly wrong and will need manual work for nearly any library, but tools could still make the process less tedious.