Switch to vite and preact

src/app/components/Btn.tsx

@@ -0,0 +1,15 @@
+import { Octicon } from '.'
+
+type BtnProps = {
+	icon?: keyof typeof Octicon,
+	label?: string,
+	active?: boolean,
+	class?: string,
+	onClick?: (event: MouseEvent) => unknown,
+}
+export function Btn({ icon, label, active, class: class_, onClick }: BtnProps) {
+	return <div class={`btn${active ? ' active' : ''}${class_ ? ` ${class_}` : ''}`} onClick={onClick}>
+		{icon && Octicon[icon]}
+		{label && <span>{label}</span>}
+	</div>
+}