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

#KT-4002 Fixed

idea/testData/codeInsight/overrideImplement/delegatedMembers.kt.after

@@ -7,15 +7,19 @@ class C(t :T) : T by t {
     override fun bar() {
         <selection><caret>throw UnsupportedOperationException()</selection>
     }
+
     override fun equals(other: Any?): Boolean {
         return super<T>.equals(other)
     }
+
     override fun foo() {
         throw UnsupportedOperationException()
     }
+
     override fun hashCode(): Int {
         return super<T>.hashCode()
     }
+
     override fun toString(): String {
         return super<T>.toString()
     }