add IoUring send_bundle, send_to, recv_multishot, sync_file_range

ignore prep_openat2* for now

add non-at variant of some unlink, rename, mkdir, symlink, link

TODO: add Sync File Flags
Signed-off-by: Bernard Assan <mega.alpha100@gmail.com>

Author: bernardassan

lib/std/os/linux.zig

@@ -3955,6 +3955,11 @@ pub const Shut = enum(u32) {
     pub const RDWR: u32 = @intFromEnum(Shut.rdwr);
 };
 
+/// SYNC_FILE_RANGE_* flags
+pub const SyncFileRange = packed struct(u32) {
+    _: u32 = 0, // TODO: fill out
+};
+
 /// Deprecated alias to Sock
 pub const SOCK = Sock;
 /// SOCK_* Socket type and flags