add __wasi_rights_t

Author: newpavlov

src/wasi.rs

@@ -36,6 +36,8 @@ pub type blksize_t = c_long;
 pub type blkcnt_t = i64;
 pub type nfds_t = c_ulong;
 
+pub type __wasi_rights_t = u64;
+
 #[allow(missing_copy_implementations)]
 #[cfg_attr(feature = "extra_traits", derive(Debug))]
 pub enum FILE {}