backend and frontend: support out of order chunks + now it's performant on chrome

frontend/src/routes/stream/+page.svelte

@@ -4,6 +4,8 @@
 
 	$: url = streamStore.Url;
 	$: certHash = streamStore.CertHash;
+	$: width = streamStore.Width;
+	$: height = streamStore.Height;
 </script>
 
 <svelte:head>
@@ -13,7 +15,7 @@
 
 <!--<section>
 </section>-->
-<Stream {url} {certHash} />
+<Stream {url} {certHash} {width} {height} />
 
 <style>
 	section {