Insert empty lines after functions and properties (KT-4002)

#KT-4002 Fixed

idea/testData/formatter/EmptyLineBetweenProperties.kt

@@ -0,0 +1,36 @@
+val p1 by Some
+val p2 = 1
+val p3: Int get() = 3
+val p4: Int
+    get() { return 1 }
+val p5: Int
+
+class OneLine {
+    val p1 by Some
+
+    val p2 = 1
+
+    val p3: Int get() = 3
+
+    val p4: Int
+        get() { return 1 }
+
+    val p5: Int
+}
+
+class TwoLines {
+    val p1 by Some
+
+
+    val p2 = 1
+
+
+    val p3: Int get() = 3
+
+
+    val p4: Int
+        get() { return 1 }
+
+
+    val p5: Int
+}