JS: create new common directory for all generated tests, migrate several tests there

js/js.translator/testData/box/inline/extensionWithManyArguments.kt

@@ -0,0 +1,15 @@
+package foo
+
+// CHECK_NOT_CALLED_IN_SCOPE: scope=multiply function=multiply$f
+
+internal class A(val a: Int)
+
+internal inline fun <T, R> with2(receiver: T, arg1: R, arg2: R, f: T.(R, R) -> R): R = receiver.f(arg1, arg2)
+
+internal fun multiply(a: Int, b: Int, c: Int): Int = with2(A(a), b, c) { x, y -> a*x*y }
+
+fun box(): String {
+    assertEquals(105, multiply(3, 5, 7))
+
+    return "OK"
+}