Add arrow to message bubbles and improve spacing (#2474)

* Add arrow to message bubbles and improve spacing

* make bubble message avatar smaller

* add bubble layout for event content

* adjust bubble arrow

* fix missing return statement for event content

* hide bubble for event content

* add new arrow to bubble message

* fix avatar username relative alignment

* fix types

* fix code block header background

* revert avatar size and make arrow less sharp

* show event messages timestamp to right when bubble is hidden

* fix avatar base css

* move message header outside bubble

* fix event time appears on left in hidden bubles

src/app/components/message/content/EventContent.tsx

@@ -1,6 +1,6 @@
 import { Box, Icon, IconSrc } from 'folds';
 import React, { ReactNode } from 'react';
-import { CompactLayout, ModernLayout } from '..';
+import { BubbleLayout, CompactLayout, ModernLayout } from '..';
 import { MessageLayout } from '../../../state/settings';
 
 export type EventContentProps = {
@@ -30,9 +30,15 @@ export function EventContent({ messageLayout, time, iconSrc, content }: EventCon
     </Box>
   );
 
-  return messageLayout === MessageLayout.Compact ? (
-    <CompactLayout before={beforeJSX}>{msgContentJSX}</CompactLayout>
-  ) : (
-    <ModernLayout before={beforeJSX}>{msgContentJSX}</ModernLayout>
-  );
+  if (messageLayout === MessageLayout.Compact) {
+    return <CompactLayout before={beforeJSX}>{msgContentJSX}</CompactLayout>;
+  }
+  if (messageLayout === MessageLayout.Bubble) {
+    return (
+      <BubbleLayout hideBubble before={beforeJSX}>
+        {msgContentJSX}
+      </BubbleLayout>
+    );
+  }
+  return <ModernLayout before={beforeJSX}>{msgContentJSX}</ModernLayout>;
 }