Control Registry Fixes

[nanuwo]

The addition of generic "switches" in 2.0 means that there should be a way for addon mods to replace these with their own controls. This pull request aims to fix that, as well as simplifying the console theme structure.

Changes

• Added a new registry for Control replacements for use by addon mods
• New sub command under tardis_refined_dev to get the list index of any generic control so that they can be easily replaced.
• The ConsoleTheme registry entries have been moved to a separate file in the registry package instead of in ConsoleTheme itself - ConsoleThemeDetails was merged with ConsoleTheme to simplify the file structure.
• Adding a new ConsoleTheme has also been greatly simplified with helper methods for adding new ControlSpecifications.
• Refactored all the console themes to use these methods

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[Jeryn99]

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