Create actual fix: handle companions correctly #KT-21114 Fixed

idea/testData/multiModuleQuickFix/companionAbsence/header/header.kt

@@ -0,0 +1,7 @@
+// DISABLE-ERRORS
+
+expect class WithCompanion {
+    companion object {
+        fun foo()
+    }
+}

idea/testData/multiModuleQuickFix/companionAbsence/header/header.kt.after

@@ -0,0 +1,7 @@
+// DISABLE-ERRORS
+
+expect class WithCompanion {
+    companion object {
+        fun foo()
+    }
+}

idea/testData/multiModuleQuickFix/companionAbsence/jvm/WithCompanion.kt

@@ -0,0 +1,6 @@
+// "Add missing actual members" "true"
+// DISABLE-ERRORS
+
+actual class <caret>WithCompanion {
+
+}

idea/testData/multiModuleQuickFix/companionAbsence/jvm/WithCompanion.kt.after

@@ -0,0 +1,9 @@
+// "Add missing actual members" "true"
+// DISABLE-ERRORS
+
+actual class WithCompanion {
+    actual companion object {
+        actual fun foo() {}
+    }
+
+}