[Fix] Epic moved the Chat system from xmpp to eos connect and its own api

[LeleDerGrasshalmi]

Fixes #775

[tnfAngel]

I have tested the changes and everything seems to works correctly. For those who upgrade, please note that there is now a length limit of 256 characters when sending a message.

Hoping this great PR gets merged.

[AntogamerYT]

Works 👍🏻 though it throws an error when the bot is alone in the party:

                    throw new EpicgamesAPIError_1.default(err.response.data, config, err.response.status);
                          ^

EpicgamesAPIError: User [REDACTED] is not member of the conversation

(REDACTED being the bot's accountId)

[LeleDerGrasshalmi]

hi @AntogamerYT, the latest update should now throw a PartyChatConversationNotFoundError error when there are no other party members.

[ThisNils]

Looks good!
One small change request 🙂