feat(layout): #211 optimize the overall layout for mobile

move navigation to aside
proper mobile handling
update logo.svg
remove pirata-one/only use it for the logo

internal/template/index.templ

@@ -0,0 +1,13 @@
+package template
+
+templ Index() {
+	<div class="h-full flex flex-col items-center justify-center">
+		<h1 class="flex gap-2 w-full justify-center">
+			<img width="600" src="/static/logo.svg" alt="SpendSparrow logo"/>
+		</h1>
+		<h2 class="text-2xl mt-8 text-gray-800">
+			Spend your <span class="px-2 text-3xl text-yellow-800">treasure</span> on the important
+		</h2>
+		<a href="/auth/signup" class="mt-24 button button-primary text-2xl p-4 font-bold">Getting Started</a>
+	</div>
+}