feat(newsfeed): Improved UI flow for the course newsfeed (#791)

* feat(newsfeed): improved the newsfeed ui

* feat(newsfeed): updated the ui

* feat(newsfeed): some improvements

* feat(newsfeed): cleanup

* chore(newsfeed): added translations

* fix(newsfeed): fixing comments and reviews from greptile and coderabbit

* fix(newsfeed): fixing comments and reviews from greptile and coderabbit, improved replies to a reply

* fix(newsfeed): fixing reviews

* fix(ui): expose cancelLabel prop in comment-tree-input and pass localized text

---------

Co-authored-by: Rotimi Best <best@classroomio.com>

packages/ui/src/custom/comment-tree/index.ts

@@ -0,0 +1,27 @@
+import Root from './comment-tree-root.svelte';
+import Item from './comment-tree-item.svelte';
+import Header from './comment-tree-header.svelte';
+import Content from './comment-tree-content.svelte';
+import Actions from './comment-tree-actions.svelte';
+import Input from './comment-tree-input.svelte';
+import Replies from './comment-tree-replies.svelte';
+
+export * from './types';
+
+export {
+  Root,
+  Item,
+  Header,
+  Content,
+  Actions,
+  Input,
+  Replies,
+  // Alias names
+  Root as CommentRoot,
+  Item as CommentItem,
+  Header as CommentHeader,
+  Content as CommentContent,
+  Actions as CommentActions,
+  Input as CommentInput,
+  Replies as CommentReplies
+};