v2.1.0 updated discord intents, and improved music player.

What's Changed

• Updated discord intents
• Improved player class
• Implemented reapting reminders
• Implement letting the bot join a test vc for debugging by @kira0x1 in #258
• Replace reactions with buttons by @kira0x1 in #259

Full Changelog: v2.0.0...v2.1.0