Listen for new threads, add reply/quote button to channels and chats, better quote handling

src/app/components/ChatMessageMenu.svelte

@@ -8,6 +8,9 @@
   export let event
   export let pubkeys
   export let popover
+  export let replyTo
+
+  const reply = () => replyTo(event)
 
   const showInfo = () => {
     popover.hide()
@@ -17,6 +20,11 @@
 
 <div class="join border border-solid border-neutral text-xs">
   <ChatMessageEmojiButton {event} {pubkeys} />
+  {#if replyTo}
+    <Button class="btn join-item btn-xs" on:click={reply}>
+      <Icon size={4} icon="reply" />
+    </Button>
+  {/if}
   <Button class="btn join-item btn-xs" on:click={showInfo}>
     <Icon size={4} icon="code-2" />
   </Button>