Allow to add and delete fields (#10990)

- Allow to add a new field
- On field click, display a delete button
- Use id instead of names for fields



https://github.com/user-attachments/assets/4ebffe22-225a-4bae-aa49-99e66170181a

packages/twenty-front/src/modules/workflow/validation-schemas/workflowSchema.ts

@@ -86,8 +86,8 @@ export const workflowFormActionSettingsSchema =
   baseWorkflowActionSettingsSchema.extend({
     input: z.array(
       z.object({
+        id: z.string().uuid(),
         label: z.string(),
-        name: z.string(),
         type: z.nativeEnum(FieldMetadataType),
         placeholder: z.string().optional(),
         settings: z.record(z.any()),