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-server/src/modules/workflow/workflow-executor/workflow-actions/form/types/workflow-form-action-settings.type.ts

@@ -3,8 +3,8 @@ import { FieldMetadataType } from 'twenty-shared';
 import { BaseWorkflowActionSettings } from 'src/modules/workflow/workflow-executor/workflow-actions/types/workflow-action-settings.type';
 
 export type FormFieldMetadata = {
+  id: string;
   label: string;
-  name: string;
   type: FieldMetadataType;
   placeholder?: string;
   settings?: Record<string, any>;