PubSub creates only 1 connection, strictly limitting amount of topics Chatterino can listen to

[zneix]

As defined here, these are the limits of how many connections and listen requests can PubSub make:

chatterino2/src/providers/twitch/PubsubClient.hpp

Lines 47 to 48 in 5ead70a

	#define MAX_PUBSUB_LISTENS 50
	#define MAX_PUBSUB_CONNECTIONS 10

While those do comply with twitch docs, we don't scale connections to 10 at max (MAX_PUBSUB_CONNECTIONS isn't used anywhere), making it sometimes impossible to listen to certain topics.
As a proof to my previous statement, I've added a some code (git diff) to see how many times we actually try to listen to a PubSub topic:

Note: 100 listen attempts instead of expected 50 might be caused due to following found by @Bun