j2k: flatten test cases and testData directory structure

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

j2k/testData/fileOrElement/constructors/constructorAnnotations.kt

@@ -0,0 +1,17 @@
+import javaApi.Anon5
+
+
+deprecated("") // this constructor will not be replaced by default parameter value in primary because of this annotation
+fun A(a: Int): A {
+    return A(a, 1)
+}
+
+class A
+[Anon5(10)]
+(private val a: Int, private val b: Int)
+
+class B [Anon5(11)]
+()
+
+class C [Anon5(12)]
+private()