Yeah this is amazing. I'd love to see integration with raylib at some point, if possible that is.
Lua's small footprint is it's one big advantage in addition to its pleasent syntax but with tiny cc (which raylib supports when I last checked a few years ago) you can get a compact c runtime as well.
I haven't worked on a project with either of these frameworks but a couple of years back I was researching into some frameworks and was surprised to learn that I can use raylib on my phone with termux!
Tiny CC doesn't have its own runtime, it uses whatever you specify (falling back to system standard), same as GCC or Clang. For low runtime footprint you are probably better off with one of those two compilers as they generate smaller, more optimised code.