Introduce quick-fix "create expected class / function / property"

#KT-27075 Fixed

idea/testData/multiModuleQuickFix/expectNestedClass/common/My.kt

@@ -0,0 +1,3 @@
+// DISABLE-ERRORS
+
+expect class My

idea/testData/multiModuleQuickFix/expectNestedClass/common/My.kt.after

@@ -0,0 +1,13 @@
+// DISABLE-ERRORS
+
+expect class My {
+    inner class Nested(s: String) {
+        fun hello(): String
+        var ss: String
+
+        class OtherNested(d: Double) {
+            val dd: Double
+        }
+
+    }
+}

idea/testData/multiModuleQuickFix/expectNestedClass/jvm/My.kt

@@ -0,0 +1,14 @@
+// "Create expected class in common module testModule_Common" "true"
+// DISABLE-ERRORS
+
+actual class My {
+    actual inner class <caret>Nested(actual val s: String) {
+        actual fun hello() = s
+
+        actual var ss = s
+
+        actual class OtherNested(actual var d: Double) {
+            actual val dd = d
+        }
+    }
+}

idea/testData/multiModuleQuickFix/expectNestedClass/jvm/My.kt.after

@@ -0,0 +1,14 @@
+// "Create expected class in common module testModule_Common" "true"
+// DISABLE-ERRORS
+
+actual class My {
+    actual inner class <caret>Nested(actual val s: String) {
+        actual fun hello() = s
+
+        actual var ss = s
+
+        actual class OtherNested(actual var d: Double) {
+            actual val dd = d
+        }
+    }
+}