Fix MoveProperty intention: better property placement

Property is placed now before first property, or at the beginning of class body if no properties found.

#KT-18044 Fixed

idea/testData/intentions/movePropertyToClassBody/location1.kt

@@ -0,0 +1,8 @@
+class TestClass(val <caret>text: String) {
+
+    fun foo() {
+
+    }
+
+    val p1 = 0
+}

idea/testData/intentions/movePropertyToClassBody/location1.kt.after

@@ -0,0 +1,9 @@
+class TestClass(text: String) {
+
+    fun foo() {
+
+    }
+
+    val text = text
+    val p1 = 0
+}

idea/testData/intentions/movePropertyToClassBody/location2.kt

@@ -0,0 +1,8 @@
+class TestClass(val <caret>text: String) {
+
+    val p1 = 0
+
+    fun foo() {
+
+    }
+}

idea/testData/intentions/movePropertyToClassBody/location2.kt.after

@@ -0,0 +1,9 @@
+class TestClass(text: String) {
+
+    val text = text
+    val p1 = 0
+
+    fun foo() {
+
+    }
+}