- Add --generate-json=<file> flag to output API metadata as JSON
- JSONSerializer collects all declarations and serializes to JSON
- Includes all types: opaque, typedefs, function pointers, enums, structs, unions, flags, functions
- Tested with SDL_init.h, SDL_video.h, SDL_gpu.h, SDL_pixels.h, SDL_rect.h
- JSON can be queried with jq for API analysis
Note: Minor memory leaks exist in comment duplication, will address separately
