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

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

@@ -0,0 +1,36 @@
+package foo
+
+class Runner {
+    public fun run(f: () -> Unit): Unit = f()
+}
+
+class Counter() {
+    var count = 0
+    val runner = Runner()
+
+    public fun count(n: Int) {
+        for (i in 1..n) {
+            tick()
+        }
+    }
+
+    public fun getCount(): Int = count
+
+    private inline fun tick()  {
+        runner.run { count++ }
+    }
+}
+
+fun add(a: Int, b: Int): Int {
+    val counter = Counter()
+    counter.count(a)
+    counter.count(b)
+    return counter.getCount()
+}
+
+fun box(): String {
+    assertEquals(3, add(1, 2))
+    assertEquals(7, add(3, 4))
+
+    return "OK"
+}