add get to the scanner

sub/xpat/src/scanner.rs

@@ -27,6 +27,11 @@ impl<'a, S: Scannable + ?Sized> Scanner<'a, S> {
         Self { bin, pat, range, cursor }
     }
 
+    pub fn get<const LEN: usize>(&mut self) -> Option<[usize;LEN]> {
+        let mut m = [0usize;LEN];
+        self.next(&mut m).then_some(m)
+    }
+    
     pub fn next(&mut self, saves: &mut [usize]) -> bool {
         let mut aob = <[u8; 0x10] as Pod>::uninit();
         let aob = make_aob(self.pat, &mut aob);