Setup spacing rules for secondary constructors

#KT-6968 Fixed

idea/testData/formatter/SecondaryConstructors.after.kt

@@ -0,0 +1,63 @@
+class A {
+    constructor() {
+    }
+
+    constructor() {
+    }
+
+    fun foo() {
+    }
+
+    constructor() {
+    }
+
+    fun foo() {
+    }
+
+    constructor() {
+    }
+
+    val x = 1
+
+    constructor() {
+    }
+
+    fun foo() {
+    }
+
+    val x = 1
+
+    constructor() {
+    }
+
+    val x = 1
+    val x = 1
+
+    constructor() {
+    }
+
+    constructor() {
+
+        x = 1
+    }
+
+    fun foo() = 1
+
+    constructor() {
+    }
+
+    fun foo() = 1
+
+
+    constructor() : this() {
+    }
+
+    constructor() : this() {
+    }
+
+    constructor() : this() {
+    }
+
+    constructor() : super() {
+    }
+}