Added tests on interface calls of enum class

backend.native/tests/codegen/enum/interfaceCallNoEntryClass.kt

@@ -0,0 +1,19 @@
+interface A {
+    fun foo(): String
+}
+
+enum class Zzz(val zzz: String, val x: Int) : A {
+    Z1("z1", 1),
+    Z2("z2", 2),
+    Z3("z3", 3);
+
+    override fun foo(): String{
+        return "('$zzz', $x)"
+    }
+}
+
+fun main(args: Array<String>) {
+    println(Zzz.Z3.foo())
+    val a: A = Zzz.Z3
+    println(a.foo())
+}