Add new form of preparation commands that runs before checking for displays

[FiveYellowMice]

Description

This PR attempts to a new form of preparation commands that runs before checking for displays, to solve feature request https://github.com/orgs/LizardByte/discussions/283 . This will include a minor refactor as suggested in this comment.

Hopefully this can open up doors for adding "on stream pause/resume" commands in the future.

Issues Fixed or Closed

https://github.com/orgs/LizardByte/discussions/283

Type of Change

• Bug fix (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)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

[sonarqubecloud]

Quality Gate failed

Failed conditions
2 New issues
2 New Code Smells (required ≤ 0)

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