feat: implement scratchpad window toggling

src/it/test_config.rs

@@ -284,6 +284,20 @@ impl TestConfig {
         })
     }
 
+    pub fn send_to_scratchpad(&self, seat: SeatId, name: &str) -> TestResult {
+        self.send(ClientMessage::SeatSendToScratchpad {
+            seat: Seat(seat.raw() as _),
+            name,
+        })
+    }
+
+    pub fn toggle_scratchpad(&self, seat: SeatId, name: &str) -> TestResult {
+        self.send(ClientMessage::SeatToggleScratchpad {
+            seat: Seat(seat.raw() as _),
+            name,
+        })
+    }
+
     fn clear(&self) {
         unsafe {
             if let Some(srv) = self.srv.take() {