Expose `Swatch` object to the caller instead of the `Swatch#rgb`

I'm using androidx.palette in an app and I'm migrating to Kotlin multiplatform. I found this great library, it has everything I need except one small thing.

After generating dominant colors from an ImageBitmap, the API gives the user a way to filter & validate the dominant color by passing Swatch.rgb to isColorValid: (Color) -> Boolean lambda:

kmpalette/kmpalette-core/src/commonMain/kotlin/com/kmpalette/DominantColorState.kt

Line 177 in 92333ed

.firstOrNull { swatch -> isColorValid(Color(swatch.rgb)) }

but in my use case, I want to validate dominant colors based on Swatch.bodyTextColor:

Color(swatch.bodyTextColor).contrastAgainst(surfaceColor) >= MinContrastRatio // 3f

I think it is more appropriate to expose the Swatch object instead, and let the caller decide how to validate the color based on Swatch properties.

Released in 2.0.0