frontend: improve launch UI and refactor stream to new page

frontend/src/routes/stream/Stream.svelte

@@ -0,0 +1,26 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+	import { streamUrl } from './stream';
+
+	interface Props {
+		url: string;
+		certHash: Array<number>;
+	}
+
+	let { url, certHash }: Props = $props();
+	let loading = $state(true);
+
+	async function startStream() {
+		console.log(`Connecting to stream at ${url} with cert_hash ${certHash}`);
+		await streamUrl(url, certHash);
+	}
+
+	onMount(async () => {
+		await startStream();
+	});
+</script>
+
+<canvas id="gamestream-canvas" width="1280" height="720"></canvas>
+
+<style>
+</style>