feat: implement basic selectable nav list

src/pages/admin/home_page.rs

@@ -0,0 +1,11 @@
+use leptos::prelude::*;
+
+#[component]
+pub fn AdminHomePage() -> impl IntoView {    
+    view! {
+        <div class="flex flex-1 flex-col gap-4 items-center m-4">
+            <div class="font-bold text-3xl">"Admin Home Page"</div>
+            <div class="text-lg">"This is just a placeholder for now."</div>
+        </div>
+    }
+}