Refactoring parts of the bot, as well as general improvements.

Changes

Commands

• Fixed ?mute command not working
• ?userinfo and ?botinfo embed improvements for mobile
• Command ?emotionalsupport messages improved
• ?setchannel renamed to ?set, to reflect the added variables
• Removed ?releasedate

Code improvements

• Added ESLint and prettier for cleaner code
• ChannelSchema renamed to GuildSchema, to reflect the added variables
• Leaderboard embed improvements
• Several commands moved to more appropriate categories