[bindgen] wlr_presentation_time

[Shinyzenith]

• I was unable to get clockid_t to work hence the CI will fail but other than that I think the rest is fine. If someone can tell me how to fix the issue, I'll promptly implement it.

What I've tried:

• include bits/type.h and bits/types/clockid_t.h and then include it in the cdef.
• Re-define clockid_t as typedef uint32_t clockid_t

Signed-off-by: Shinyzenith [email protected]