dashboard: add custom page titles for documentation and dashboard

dashboard/src/components/Title.vue

@@ -0,0 +1,13 @@
+<script lang="ts">
+  export default {
+    props: ['title'],
+    watch: {
+      title: {
+        immediate: true,
+        handler() {
+          document.title = this.title;
+        },
+      },
+    },
+  };
+</script>