Address Issue #8 + Misc Updates

[chRyNaN]

This PR resolves Issue #8.

• Updated Compose Multiplatform to version 1.4.1
• Created elapsedSystemTime function
• Removed the kotlinx.datetime dependency and updated NavigationEvent to use milliseconds of elapsed system time
• Created ContextAndDestination class
• Replaced NavigationContainer functions with a single NavigationContainer function that uses the ContextAndNavigation class.
• Updated custom serializers to use CompositeEncoder and CompositeDecoder

Warning! This PR introduces breaking API changes

The NavigationContainer functions were replaced with a single NavigationContainer function that takes a ContextAndDestination class as a parameter to the content closure. This was done because there was confusion about which NavigationContainer function to use before, and using any of them required explicit parameter definitions for the content closure in order for the type system to be able to infer which function was being utilized. The new NavigationContainer function can be used like the following:

NavigationContainer(
    navigator = navigator
) { (context, destination) -> 
    Text("context = $context; destination = $destination")
}

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