Move: Suggest creating Kotlin file if it doesn't exist

#KT-5379 Fixed

idea/src/org/jetbrains/jet/plugin/refactoring/JetRefactoringBundle.properties

@@ -42,4 +42,6 @@ package.private.0.will.no.longer.be.accessible.from.1=Package-private {0} will n
 0.will.become.invisible.after.extraction={0} will become invisible after extraction
 setter.of.0.will.become.invisible.after.extraction = Setter of {0} will become invisible after extraction
 
-naming.convention.will.be.violated.after.rename=Naming conventions will be violated after rename
+naming.convention.will.be.violated.after.rename=Naming conventions will be violated after rename
+
+file.does.not.exist=File {0} does not exist.\nDo you want to create it?

idea/src/org/jetbrains/jet/plugin/refactoring/move/moveTopLevelDeclarations/ui/MoveKotlinTopLevelDeclarationsDialog.java

@@ -297,6 +297,14 @@ public class MoveKotlinTopLevelDeclarationsDialog extends RefactoringDialog {
         JetFile jetFile = (JetFile) RefactoringPackage.toPsiFile(targetFile, myProject);
         if (jetFile != null) return new JetFileKotlinMoveTarget(jetFile);
 
+        int ret = Messages.showYesNoDialog(
+                myProject,
+                JetRefactoringBundle.message("file.does.not.exist", targetFile.getName()),
+                RefactoringBundle.message("move.title"),
+                Messages.getQuestionIcon()
+        );
+        if (ret != Messages.YES) return null;
+
         File targetDir = targetFile.getParentFile();
         final PsiDirectory psiDirectory = RefactoringPackage.toPsiDirectory(targetDir, myProject);
         assert psiDirectory != null : "No directory found: " + targetDir.getPath();