basic refactoring of @biscuitland/ws about seyfert HOT 1 CLOSED

[Commands - INT]

    - Identify (triggers the initial handshake with the gateway) [READY].
    - Resume (resumes an interrupted gateway connection) [READY] 
    - Heartbeat (maintains an active gateway connection) [READY] 
    - Request guild members (request members for a guild) [NOT READY]
    - Update voice status (joins, moves, or disconnects the client from a voice channel) [NOT READY]
    - Update presence (updates the presence of a client) [NOT READY]

[Events - INT]

    - Hello (defines the heartbeat interval) [READY]
    - Ready (contains the initial status information) [READY]
    - resumed (response to resumed<Resume>) [READY] 
    - reconnect (server goes away, client must reconnect to gateway and resume) [READY]
    - Invalid session (failure response to identify or resume or invalid active session) [READY]

https://discord.com/developers/docs/topics/gateway#event-names