Feature request: allow pinned / starred messagens in channel

Pinned or starred messages in channels would be nice to have! It allows channel admins to create a quick access for relevant messages in the channels. Clicking in a "Pin" or "Star" symbol on channel details or channel header, it would open a floating box with pinned/starred messages and clicking on them, it points the channel main chat history to the clicked message - with an options do "Jump to the present" and go to last message.