Add workflow email action (#7279)

- Add the SAVE_EMAIL action. This action requires more setting
parameters than the Serverless Function action.
- Changed the way we computed the workflow diagram. It now preserves
some properties, like the `selected` property. That's necessary to not
close the right drawer when the workflow back-end data change.
- Added the possibility to set a label to a TextArea. This uses a
`<label>` HTML element and the `useId()` hook to create an id linking
the label with the input.

packages/twenty-front/src/modules/workflow/utils/generateWorkflowDiagram.ts

@@ -33,6 +33,7 @@ export const generateWorkflowDiagram = ({
       id: nodeId,
       data: {
         nodeType: 'action',
+        actionType: step.type,
         label: step.name,
       },
       position: {