feat: add window bind devicePixelRatio support

src/compiler/compile/nodes/Window.ts

@@ -17,6 +17,7 @@ const valid_bindings = [
 	'outerHeight',
 	'scrollX',
 	'scrollY',
+	'devicePixelRatio',
 	'online'
 ];
 

src/compiler/compile/render_dom/wrappers/Window.ts

@@ -14,6 +14,7 @@ const associated_events = {
 	innerHeight: 'resize',
 	outerWidth: 'resize',
 	outerHeight: 'resize',
+	devicePixelRatio: 'resize',
 
 	scrollX: 'scroll',
 	scrollY: 'scroll'
@@ -29,6 +30,7 @@ const readonly = new Set([
 	'innerHeight',
 	'outerWidth',
 	'outerHeight',
+	'devicePixelRatio',
 	'online'
 ]);