[Announcements] Schedule replies to Announcements and Discussions (for Instructors)

Problem statement:

Canvas allows the poster to schedule (delayed publish) Announcements and Discussions. A similar scheduled post feature for Replies to Announcements and Discussions is missing. The use case is similar to scheduled Announcements and Discussions: Say, I ask a question in a Discussion. After student reply deadline, I want to post an "official"/comprehensive explanation. I should be able to schedule my reply in advance with delayed publish.

Proposed solution:

Allow Instructors to schedule Replies to Announcements and Discussions. Similar feature to schedule Announcements and Discussions.

User role(s):

instructor