Change Bot Nickname on Boot

[ctsstc]

It would be nice to see a bot status update for its name when the bot boots up.
I guess it may need to be incremental.

This may be related to:

• Bot should say hi/version on boot #62 - message on boot
• [Feature] Add bot status message, with prefix help command #111 - status messages, maybe have a heartbeat?

Basic Stack Overflow research 😂

• https://stackoverflow.com/questions/41247353/change-user-nickname-with-discord-js