feat: add tests for listeners and commands

[Scheuraa007]

Overview

Add tests for the commands and listeners

Description

Add tests for all commands to ensure that they are working correctly.
Add test for the listener to ensure that to mobspawn is correctly disabled

Submitter Checklist

• Make sure you are opening from a topic branch (/feature/fix/docs/ branch (right side)) and not your main branch.
• Ensure that the pull request title represents the desired changelog entry.
• New public fields and methods are annotated with @since TODO.
• I read and followed the contribution guidelines.

[theEvilReaper]

There are a few cases that require minor adjustments, but overall this is good work.
Please rebase with the target branch to resolve the merge conflict