feat: Implement rest api endpoint to test step

packages/backend/src/controllers/api/v1/steps/test-step.js

@@ -0,0 +1,12 @@
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  let step = await request.currentUser.authorizedSteps
+    .clone()
+    .findById(request.params.stepId)
+    .throwIfNotFound();
+
+  step = await step.test();
+
+  renderObject(response, step);
+};