Write connection dies and doesn't reconnect

[pajlada]

Describe the bug
I stopped being able to write messages in chat.

This seems to me like the write connection dying, and the ping messages dying.

@pajlada add qDebug messages for when pings are sent and received and let connections be tagged READ/WRITE so we actually know which connection is sending what message

To reproduce
N/A

Screenshots

Chatterino version
commit a6e23e2

Operating system
Arch Linux btw

Additional information

[apa420]

Fixed by #2850