Show 'edited' label if post has been edited

src/api/posts.ts

@@ -50,6 +50,7 @@ export interface Post {
   id: string;
   uri: string;
   created_at: string;
+  edited_at: string | null;
   account: Profile;
   content: string;
   in_reply_to_id: string | null;

src/components/Post.vue

@@ -30,6 +30,7 @@
       >
         <visibility-icon :visibility="post.visibility"></visibility-icon>
       </span>
+      <span v-if="post.edited_at">edited</span>
       <a
         class="timestamp"
         :href="post.uri"