Reflection: add KClass.{supertypes,superclasses,allSupertypes,allSuperclasses}

Some things are not implemented yet for allSupertypes, such as KType->Type
mapping of types and generic substitution of built-in types

core/runtime.jvm/src/kotlin/jvm/internal/ClassReference.kt

@@ -16,10 +16,7 @@
 
 package kotlin.jvm.internal
 
-import kotlin.reflect.KCallable
-import kotlin.reflect.KClass
-import kotlin.reflect.KFunction
-import kotlin.reflect.KTypeParameter
+import kotlin.reflect.*
 
 class ClassReference(override val jClass: Class<*>) : KClass<Any>, ClassBasedDeclarationContainer {
     override val simpleName: String?
@@ -46,6 +43,9 @@ class ClassReference(override val jClass: Class<*>) : KClass<Any>, ClassBasedDec
     override val typeParameters: List<KTypeParameter>
         get() = error()
 
+    override val supertypes: List<KType>
+        get() = error()
+
     private fun error(): Nothing = throw KotlinReflectionNotSupportedError()
 
     override fun equals(other: Any?) =