Desktop: Implement pointer lock for NumberInput (#3638)

* Desktop: Implement pointer lock for NumberInput

* add shift and ctrl modifiers

* fixup

desktop/wrapper/src/messages.rs

@@ -65,6 +65,7 @@ pub enum DesktopFrontendMessage {
 	ClipboardWrite {
 		content: String,
 	},
+	PointerLock,
 	WindowClose,
 	WindowMinimize,
 	WindowMaximize,
@@ -132,6 +133,10 @@ pub enum DesktopWrapperMessage {
 	ClipboardReadResult {
 		content: Option<String>,
 	},
+	PointerLockMove {
+		x: f64,
+		y: f64,
+	},
 }
 
 #[derive(Clone, serde::Serialize, serde::Deserialize, Debug)]