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

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

@@ -0,0 +1,25 @@
+package foo
+
+// CHECK_CONTAINS_NO_CALLS: identity
+// CHECK_CONTAINS_NO_CALLS: sumNoInline
+
+internal inline fun sum(a: Int, b: Int = 0): Int {
+    return a + b
+}
+
+internal fun identity(a: Int): Int {
+    return sum(a)
+}
+
+internal fun sumNoInline(a: Int, b: Int): Int {
+    return sum(a, b)
+}
+
+fun box(): String {
+    assertEquals(1, identity(1))
+    assertEquals(2, identity(2))
+    assertEquals(3, sumNoInline(1, 2))
+    assertEquals(5, sumNoInline(2, 3))
+
+    return "OK"
+}