Add notification

src/views/Home.vue

@@ -1,5 +1,16 @@
 <template>
   <div class="home">
+    <b-notification
+          type="is-warning"
+          has-icon
+          aria-close-label="close"
+          role="alert"
+          style="margin-bottom: 0px;"
+        >
+        Dear BioImage Model Zoo Users, our website is currently undergoing maintenance due to a significant API change in Zenodo (https://zenodo.org), which we used for our model storage. This affects model downloads and other features.
+
+        Our developer team is actively working on a fix to restore access as soon as possible. We apologize for any inconvenience and appreciate your patience.
+    </b-notification>
     <!-- Header -->
     <section
       class="hero is-link is-fullheight is-fullheight-with-navbar"