feat: List Github notifications

src/integrations/github/preview/GithubDiscussionPreview.tsx

@@ -0,0 +1,27 @@
+import { Detail, ActionPanel, Action } from "@raycast/api";
+import { Notification } from "../../../types";
+import { GithubDiscussion } from "../types";
+import { useMemo } from "react";
+import { getNotificationHtmlUrl } from "../../../notification";
+
+interface GithubDiscussionPreviewProps {
+  notification: Notification;
+  githubDiscussion: GithubDiscussion;
+}
+
+export function GithubDiscussionPreview({ notification, githubDiscussion }: GithubDiscussionPreviewProps) {
+  const notification_html_url = useMemo(() => {
+    return getNotificationHtmlUrl(notification);
+  }, [notification]);
+
+  return (
+    <Detail
+      markdown={`# ${githubDiscussion.title}`}
+      actions={
+        <ActionPanel>
+          <Action.OpenInBrowser url={notification_html_url} />
+        </ActionPanel>
+      }
+    />
+  );
+}