Use wrappers for system resources like Colors, Images and Styles

[vpodlesnyak]

Is your feature request related to a problem? Please describe.
Using type alias is more resource effective but also makes it hard to write unit tests and support configuration changes.

In case of a wrapper it'd be possible to write unit tests instead of instrumented tests as values could be compared by resource id

Describe the solution you'd like
Create wrappers like

interface KalugaColor {
   val value: PlatformSpecificColor
}

class DefaultKalugaColor(private val id: String) {
    override fun equals(other: Any?): Boolean = ... // compare by id
    override fun toString(): String = // print debug info, like id and maybe hex representation
    
    val value: PlatformSpecificColor get() = // load color by id every time to seamlessly support config change, the loading itself is cached on the system level
}