[NoArg] Reorganize module structure of NoArg plugin

plugins/noarg/testData/box/subclass.kt

@@ -0,0 +1,22 @@
+// WITH_STDLIB
+
+annotation class NoArg
+
+open class Base1
+open class Base2(val a: Int = 1)
+open class Base3(val a: Int) {
+    @JvmOverloads constructor(a: Long = 1L) : this(a.toInt())
+}
+
+@NoArg class Test1(val b: String) : Base1()
+@NoArg class Test2(val b: String) : Base2()
+@NoArg class Test3(val b: String) : Base3()
+
+fun box(): String {
+    val test1 = Test1::class.java.newInstance()
+    val test2 = Test2::class.java.newInstance()
+    if (test2.a != 1) return "fail@test2: ${test2.a}"
+    val test3 = Test3::class.java.newInstance()
+    if (test3.a != 1) return "fail@test3: ${test3.a}"
+    return "OK"
+}