JS backend: testFiles -> testData

js/js.translator/testData/multiFile/cases/classOfTheSameNameInAnotherPackage/A.kt

@@ -0,0 +1,7 @@
+package foo
+
+open class A() {
+    fun f() = 3
+}
+
+fun box() = (A().f() + bar.A().f()) == 9

js/js.translator/testData/multiFile/cases/classOfTheSameNameInAnotherPackage/B.kt

@@ -0,0 +1,5 @@
+package bar
+
+open class A() {
+    fun f() = 6
+}