added diaper overview page

src/baby_monitor/static/index.html

@@ -217,6 +217,7 @@
     <div class="menu-overlay" id="menuOverlay">
       <div class="menu-item" id="menuAddChild">👶 Add Child</div>
       <div class="menu-item" id="menuFeedings">🍼 Feedings</div>
+      <div class="menu-item" id="menuDiapers">🧷 Diapers</div>
       <div class="menu-item logout" id="menuLogout">🚪 Logout</div>
     </div>
 
@@ -290,6 +291,10 @@
         window.location.href = "/feedings.html";
       });
 
+      document.getElementById("menuDiapers").addEventListener("click", () => {
+        window.location.href = "/diapers.html";
+      });
+
       document.getElementById("menuLogout").addEventListener("click", () => {
         closeMenu();
         logout();