QuickFixMultiModule: change tests structure

idea/testData/multiModuleQuickFix/createActual/function/jvm/foo.kt

@@ -0,0 +1 @@
+// foo: to be implemented

idea/testData/multiModuleQuickFix/createActual/function/jvm/foo.kt.after

@@ -0,0 +1,4 @@
+// foo: to be implemented
+actual fun foo(arg: Int): String {
+    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+}