Extraction Engine: Support lazy properties and properties with initializer

idea/testData/refactoring/introduceProperty/extractWithInitializerToClass.kt

@@ -0,0 +1,10 @@
+// EXTRACTION_TARGET: property with initializer
+
+class A(val n: Int = 1) {
+    val m: Int = 2
+
+    fun foo(): Int {
+        return <selection>m + n + 1</selection>
+    }
+}
+