feat: Show server status in the channels panel (amount of people in VC, streaming, etc...)

[LmanTW]

Problem

Currently there's no way to see which server have people in VC, or streaming.

Proposed solution

Show it like how user activities are showed.

Alternatives considered

No response

Additional context

No response

Confirmations

• I searched existing issues and discussions for the same idea.
• This request does not involve self-bot automation, mass actions, or scraping.