Enhancement: Intelligent room sorting logic

[nurefexc]

Goal

Ensure that the rooms the user actually needs to open are always at the top, minimizing scrolling and search time.

Logic

Sort based on a weight-based priority system:

1. Rooms with Direct Mentions/DMs (High priority)
2. Rooms with unread counts (Medium priority)
3. Frequently visited rooms (Low-latency access)
4. Muted/Idle rooms (Bottom)

Tasks

• Refactor the sorting algorithm to use a multi-criteria weight system.
• Add a visual separator between "Active" and "Idle" rooms.