Factor out calendar event component, render calendar event notes better

src/app/components/CalendarEventMeta.svelte

@@ -0,0 +1,24 @@
+<script lang="ts">
+  import {fromPairs} from "@welshman/lib"
+  import type {TrustedEvent} from "@welshman/util"
+  import Icon from "@lib/components/Icon.svelte"
+  import ProfileLink from "@app/components/ProfileLink.svelte"
+
+  type Props = {
+    event: TrustedEvent
+  }
+
+  const {event}: Props = $props()
+  const meta = $derived(fromPairs(event.tags) as Record<string, string>)
+</script>
+
+<span>
+  Posted by <ProfileLink pubkey={event.pubkey} />
+</span>
+{#if meta.location}
+  <span>•</span>
+  <span class="flex items-center gap-1">
+    <Icon icon="map-point" size={4} />
+    {meta.location}
+  </span>
+{/if}