[Request] - Rename /bad to /addbad and /unbad to /removebad

**Is your feature request related to a problem? Please describe.**
`/bad` and `/unbad` use the old v2 command syntax.

**Describe the solution you'd like**
For a more easy to learn commands structure, we need to use `add` and `remove` as standard prefixes for commands.

**Describe alternatives you've considered**
n/a

**Additional context**
n/a
