Code Insight: "Generate secondary constructor" action

#KT-6970 Fixed

idea/testData/codeInsight/generate/secondaryConstructors/empty.kt

@@ -0,0 +1,20 @@
+// ACTION_CLASS: org.jetbrains.kotlin.idea.actions.generate.KotlinGenerateSecondaryConstructorAction
+// WITH_RUNTIME
+class Foo {<caret>
+    val x = 1
+    val y: Int
+    val z: Int get() = 3
+    val u: Int by lazy { 4 }
+
+    init {
+        y = 2
+    }
+
+    fun foo() {
+
+    }
+
+    fun bar() {
+
+    }
+}