Service monitoring

Reworked the bot to ditch a lot of its original flavour as a bot that mimics my D&D character, and added additional functionality for monitoring and managing Valheim services.

Status

MVP release of bot.
Features:
-help - lists commands
-historical - posts a meme
-morning - posts a greeting
-status - gives the status of all active jobs and the last 3 jobs
-redact - tidies up the most recent postings of the bot in the current channel