Code Insight: "Generate secondary constructor" action

#KT-6970 Fixed

idea/testData/codeInsight/generate/secondaryConstructors/properties.kt.after

@@ -0,0 +1,21 @@
+// ACTION_CLASS: org.jetbrains.kotlin.idea.actions.generate.KotlinGenerateSecondaryConstructorAction
+class Foo {
+    val n: Int
+
+    val x = 1
+
+    val m: Int
+
+    <caret>constructor(n: Int, m: Int) {
+        this.n = n
+        this.m = m
+    }
+
+    fun foo() {
+
+    }
+
+    fun bar() {
+
+    }
+}