j2k: flatten test cases and testData directory structure

Move j2k/test/tests -> j2k/tests, j2k/test/testData -> j2k/testData

j2k/testData/fileOrElement/formatting/staticMembersWithComments.kt

@@ -0,0 +1,29 @@
+class F {
+    class object {
+
+        //c1
+
+        /*c2*/
+
+        fun f1() {
+        }
+
+
+        //c3
+
+
+
+
+        //c4
+
+        fun f2() {
+        }
+
+        var i: Int? = 0
+
+        fun f3() {
+        }
+    }
+
+    //c5
+}