Convert to secondary constructor: suggest on class name

#KT-40861 Fixed

idea/testData/intentions/convertPrimaryConstructorToSecondary/caretOnClassBody.kt

@@ -0,0 +1,4 @@
+// IS_APPLICABLE: false
+class Foo() <caret>{
+    fun bar() {}
+}

idea/testData/intentions/convertPrimaryConstructorToSecondary/caretOnClassName.kt

@@ -0,0 +1 @@
+class <caret>Foo(val x: Int)

idea/testData/intentions/convertPrimaryConstructorToSecondary/caretOnClassName.kt.after

@@ -0,0 +1,7 @@
+class Foo {
+    val x: Int
+
+    constructor(x: Int) {
+        this.x = x
+    }
+}

idea/testData/intentions/convertPrimaryConstructorToSecondary/caretOnClassNameWithConstructorKeyword.kt

@@ -0,0 +1,2 @@
+// IS_APPLICABLE: false
+class Fo<caret>o constructor()

idea/testData/intentions/convertPrimaryConstructorToSecondary/caretOnClassNameWithoutPrimaryConstructor.kt

@@ -0,0 +1,2 @@
+// IS_APPLICABLE: false
+class <caret>Foo