[REQUEST] Add Draft Collections Tab

[erinehall]

Currently, all collections created by users appear under the "My Collections" tab, which can make it difficult for Team Leads and Admins to differentiate between their own collections and draft collections created by others.

Solution:
Add a new "Draft Collections" tab accessible only to Team Leads and Admins. This tab should display all draft collections, including those made by other users, while the "My Collections" tab should only show collections authored by the logged-in user.