[Bug][bybit/ws] Subscriptions' responses to clients overlap

[AleGlowa]

It's not an emergency bug in this moment, so I suggest trying to fix it later ( probably when users are introduced ).

Possible ways to fix it:

• SubscriptionRef stream of changes is probably global for all clients -> divide this stream between user ids
• Divide channel part of state between user ids
• Divide isConnected part of state between user ids

[AleGlowa]

Solution:
Create a hub for every subscription