Push Down: Support moving members from Java to Kotlin class

#KT-9485 Fixed

idea/testData/refactoring/pushDown/k2k/pushInterfaceMembers.kt.after

@@ -0,0 +1,69 @@
+interface I {
+
+}
+
+abstract class A : I {
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+    // INFO: {"checked": "true"}
+    abstract val y: Int
+
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    abstract fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+class B : I {
+    val y = 1
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+interface J : I {
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+    // INFO: {"checked": "true"}
+    val y: Int
+
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    fun bar(s: String)
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}
+
+interface K : I {
+    val y: Int get() = 1
+    // INFO: {"checked": "true"}
+    val x: Int get() = 2
+
+    fun bar(s: String) = s.length()
+    // INFO: {"checked": "true"}
+    fun foo(n: Int): Boolean = n > 0
+
+    // INFO: {"checked": "true"}
+    class Y {
+
+    }
+}