Extract a SessionFormMessage component

src/components/SessionFormMessage.vue

@@ -0,0 +1,19 @@
+<template>
+  <div v-if="messages.length" class="border p-4 mb-6">
+    <ul class="list-disc list-inside ml-3">
+      <li v-for="message in messages" :key="message">{{ message }}</li>
+    </ul>
+  </div>
+</template>
+
+<script>
+export default {
+  props: {
+    messages: {
+      type: Array,
+      required: true,
+      default: () => []
+    }
+  }
+}
+</script>