std.os.linux: fanotify_init, fanotify_mark, name_to_handle_at

* Delete existing `FAN` struct in favor of a `fanotify` struct which has
  type-safe bindings (breaking).
* Add name_to_handle_at syscall wrapper.
* Add file_handle
* Add kernel_fsid_t
* Add fsid_t
* Add and update std.posix wrappers.
6c64090e7aAndrew Kelley committed on 7/12/2024, 7:14:07 AMparent26d506c
2 files changedLine totals unavailable