Update cogs to d.py2.0

[Just-Jojo]

Type

• [ ] Bugfix
• [x] Enhancement
• [x] New Feature
• [ ] Other

Description of the changes

Brings the cogs up to discord.py version 2.0. This will be merged when Red updates to v3.5

[Just-Jojo]

I haven't been paying attention to a lot of things that have been going on with d.py2/red 3.5 so I'm just gonna rewrite the entire pr