tree: implement pointer constraints

jay-config/src/_private/client.rs

@@ -297,6 +297,10 @@ impl Client {
         axis
     }
 
+    pub fn disable_pointer_constraint(&self, seat: Seat) {
+        self.send(&ClientMessage::DisablePointerConstraint { seat });
+    }
+
     pub fn set_fullscreen(&self, seat: Seat, fullscreen: bool) {
         self.send(&ClientMessage::SetFullscreen { seat, fullscreen });
     }

jay-config/src/_private/ipc.rs

@@ -304,6 +304,9 @@ pub enum ClientMessage<'a> {
         seat: Seat,
         use_hardware_cursor: bool,
     },
+    DisablePointerConstraint {
+        seat: Seat,
+    },
 }
 
 #[derive(Encode, Decode, Debug)]