[US] Get Only My Bookmarks

[JaqiKal]

Statement:

As a user, I can access an endpoint that shows only my own bookmarks so that I can quickly find resources I’ve saved without sifting through everyone’s bookmarks.

Acceptance Criteria:

• [ ]: Endpoint /bookmarks/me/ returns only bookmarks created by the authenticated user.
• [ ]: The endpoint requires authentication and returns 403 if the user is not logged in.
• [ ]: The response is paginated and includes metadata (count, next, previous).

Tasks:

• [ ]: Add a custom route @action(detail=False) in BookmarkViewSet called me.
• [ ]: Filter queryset by request.user and return only their bookmarks.
• [ ]: Restrict access to authenticated users.
• [ ]: Add tests for success and unauthorized access cases.

Belonging to EPIC: Database & Backend
Belonging to Feature: User Dashboard
Belonging to Theme: Core Features