chore: improve setup item organization

[theEvilReaper]

Proposed changes

The pull request introduces a change in how the items for the setup are organized. It adds a layout that can contain different items at specific positions within the player’s hotbar inventory. This improves their organization.

Types of changes

What types of changes does your code introduce to this project?
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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

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• I have read the CONTRIBUTING.md
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)