8726 workflow add a test button in workflow code step (#9016)

- add test button to workflow code step
- add test tab to workflow code step


https://github.com/user-attachments/assets/e180a827-7321-49a2-8026-88490c557da2



![image](https://github.com/user-attachments/assets/cacbd756-de3f-4141-a84c-8e1853f6556b)

![image](https://github.com/user-attachments/assets/ee170d81-8a22-4178-bd6d-11a0e8c73365)

packages/twenty-front/src/modules/serverless-functions/utils/getFunctionOutputSchema.ts

@@ -0,0 +1,49 @@
+import { BaseOutputSchema } from '@/workflow/search-variables/types/StepOutputSchema';
+import { isObject } from '@sniptt/guards';
+import { InputSchemaPropertyType } from '@/workflow/types/InputSchema';
+import { isDefined } from 'twenty-ui';
+
+const getValueType = (value: any): InputSchemaPropertyType => {
+  if (!isDefined(value) || value === null) {
+    return 'unknown';
+  }
+  if (typeof value === 'string') {
+    return 'string';
+  }
+  if (typeof value === 'number') {
+    return 'number';
+  }
+  if (typeof value === 'boolean') {
+    return 'boolean';
+  }
+  if (Array.isArray(value)) {
+    return 'array';
+  }
+  if (isObject(value)) {
+    return 'object';
+  }
+  return 'unknown';
+};
+
+export const getFunctionOutputSchema = (testResult: object) => {
+  return testResult
+    ? Object.entries(testResult).reduce(
+        (acc: BaseOutputSchema, [key, value]) => {
+          if (isObject(value) && !Array.isArray(value)) {
+            acc[key] = {
+              isLeaf: false,
+              value: getFunctionOutputSchema(value),
+            };
+          } else {
+            acc[key] = {
+              isLeaf: true,
+              value,
+              type: getValueType(value),
+            };
+          }
+          return acc;
+        },
+        {},
+      )
+    : {};
+};