Code Insight: "Generate secondary constructor" action

#KT-6970 Fixed

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

@@ -0,0 +1,16 @@
+// ACTION_CLASS: org.jetbrains.kotlin.idea.actions.generate.KotlinGenerateSecondaryConstructorAction
+open class Base<X, Y>(n: X) {
+    constructor(x: X, y: Y): this(x)
+}
+
+class Foo<U> : Base<U, Int> {<caret>
+    val x = 1
+
+    fun foo() {
+
+    }
+
+    fun bar() {
+
+    }
+}