Wizard: Add Users step to the wizard (HMS-4902)

This commit adds a new step 'Users' that is enabled only in stage-preview,
and will enable it in stage-stable once IQE tests are ready.
The step is not functional yet, this is just the first step.

src/test/Components/CreateImageWizard/steps/Repositories/Repositories.test.tsx

@@ -46,6 +46,7 @@ const goToRepositoriesStep = async () => {
 const goToReviewStep = async () => {
   await clickNext(); // Additional packages
   await clickNext();
+  await clickNext(); // Users
   await clickNext(); // First Boot
   await enterBlueprintName();
   await clickNext(); // Review