feat(PRPage): add created_at to event wrapper

the text is not aligned to the middle which needs fixing

tailwind align-middle wasn't working

src/lib/components/events/EventWrapper.svelte

@@ -1,13 +1,22 @@
 <script lang="ts">
+    import dayjs from "dayjs";
     import UserHeader from "../users/UserHeader.svelte";
     import type { User } from "../users/type";
     import { defaults as user_defaults } from "../users/type";
 
     export let author: User = { ...user_defaults };
+    export let created_at: number | undefined;
+    let created_at_ago = "";
+    $: created_at_ago = created_at ? dayjs(created_at * 1000).fromNow() : "";
 </script>
 
 <div class="pl-3 p-3 border-b border-base-300">
-    <UserHeader user={author} />
+    <div class="flex">
+        <div class="flex-auto">
+            <UserHeader user={author} />
+        </div>
+        <div class="text-xs mt-3">{created_at_ago}</div>
+    </div>
     <div class="ml-11">
         <slot />
     </div>

src/lib/wrappers/EventCard.svelte

@@ -22,7 +22,7 @@
     });
 </script>
 
-<EventWrapper author={$author}>
+<EventWrapper author={$author} created_at={event.created_at}>
     {#if event.kind == patch_kind}
         <Kind317 content={event.content} tags={event.tags} />
     {:else if event.kind === pr_status_kind}