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/src/org/jetbrains/kotlin/idea/intentions/MovePropertyToClassBodyIntention.kt

@@ -39,7 +39,8 @@ class MovePropertyToClassBodyIntention : SelfTargetingIntention<KtParameter>(KtP
         val propertyDeclaration = KtPsiFactory(element)
                 .createProperty("${element.valOrVarKeyword?.text} ${element.name} = ${element.name}")
 
-        parentClass.addDeclaration(propertyDeclaration).apply {
+        val firstProperty = parentClass.getProperties().firstOrNull()
+        parentClass.addDeclarationBefore(propertyDeclaration, firstProperty).apply {
             val propertyModifierList = element.modifierList?.copy() as? KtModifierList
             propertyModifierList?.let { modifierList?.replace(it) ?: addBefore(it, firstChild) }
             modifierList?.annotationEntries?.forEach {

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() {
+
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -11573,6 +11573,18 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             doTest(fileName);
         }
 
+        @TestMetadata("location1.kt")
+        public void testLocation1() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/movePropertyToClassBody/location1.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("location2.kt")
+        public void testLocation2() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/movePropertyToClassBody/location2.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("parameterAnnotation.kt")
         public void testParameterAnnotation() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/movePropertyToClassBody/parameterAnnotation.kt");