Add Customizable Color Provider for Feature State Colors

[Eli-Liebman]

Description

Adds customizable color provider support for feature state colors in FeaturesTableViewController. Allows developers to customize the colors used for enabled and disabled feature states on a per-feature basis, making it easier to visually distinguish between different types of feature flags (e.g., server-side vs client-side flags).

Practical Example:

• Server-side feature flags: Blue (enabled) / Orange (disabled)
• Client-side feature flags: Green (enabled) / Red (disabled)
• Experimental features: Purple (enabled) / Gray (disabled)

How Has This Been Tested?

Manually tested and ensured that the colors are updated and propagated correctly.

Note on Automated Tests:
I was unable to add or run automated tests as they no longer build due to Nimble being out of date. The specific issue seems to be related to: Quick/Nimble#1061. There are a number of breaking changes over the years so updating is a rather large task that should be handled separately.

Screenshots (if appropriate):

Created with the following:

ClosureFeatureStateColorProvider { feature in
    if feature.key?.hasPrefix("_") == true {
        return FeatureStateColors(enabledColor: .blue, disabledColor: .orange)
    } else {
        return FeatureStateColors.defaultStateColors
    }
}

Types of changes

• 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 change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

License

I confirm that this contribution is made under an MIT license and that I have the authority necessary to make this contribution on behalf of its copyright owner.