feat: Implement get previous steps rest API endpoint

packages/backend/test/mocks/rest/api/v1/steps/get-previous-steps.js

@@ -0,0 +1,41 @@
+const getPreviousStepsMock = async (steps, executionSteps) => {
+  const data = steps.map((step) => {
+    const filteredExecutionSteps = executionSteps.filter(
+      (executionStep) => executionStep.stepId === step.id
+    );
+
+    return {
+      id: step.id,
+      type: step.type,
+      key: step.key,
+      appKey: step.appKey,
+      iconUrl: step.iconUrl,
+      webhookUrl: step.webhookUrl,
+      status: step.status,
+      position: step.position,
+      parameters: step.parameters,
+      executionSteps: filteredExecutionSteps.map((executionStep) => ({
+        id: executionStep.id,
+        dataIn: executionStep.dataIn,
+        dataOut: executionStep.dataOut,
+        errorDetails: executionStep.errorDetails,
+        status: executionStep.status,
+        createdAt: executionStep.createdAt.getTime(),
+        updatedAt: executionStep.updatedAt.getTime(),
+      })),
+    };
+  });
+
+  return {
+    data: data,
+    meta: {
+      count: data.length,
+      currentPage: null,
+      isArray: true,
+      totalPages: null,
+      type: 'Step',
+    },
+  };
+};
+
+export default getPreviousStepsMock;