refactor: move website files to the root level

src/components/talk/Slides.astro

@@ -0,0 +1,22 @@
+---
+interface Props {
+  id: string;
+  ratio?: string;
+}
+
+const { id, ratio }: Props = Astro.props;
+---
+
+<div>
+  <h2 class="mb-2">Slides</h2>
+
+  <div class="slides">
+    <noscript>**Please enable JavaScript to view slides.**</noscript>
+    <script
+      class="speakerdeck-embed"
+      data-id={id}
+      data-ratio={ratio ?? "1.29456384323641"}
+      src="//speakerdeck.com/assets/embed.js"
+    ></script>
+  </div>
+</div>