7417 workflows i can send emails using the email account (#7431)

- update `send-email.workflow-action.ts` so it send email via the google
sdk
- remove useless `workflow-action.email.ts`
- add `send` authorization to google api scopes
- update the front workflow email step form to provide a
`connectedAccountId` from the available connected accounts
- update the permissions of connected accounts: ask users to reconnect
when selecting missing send permission


![image](https://github.com/user-attachments/assets/fe3c329d-fd67-4d0d-8450-099c35933645)

packages/twenty-server/src/database/typeorm-seeds/core/feature-flags.ts

@@ -70,6 +70,11 @@ export const seedFeatureFlags = async (
         workspaceId: workspaceId,
         value: true,
       },
+      {
+        key: FeatureFlagKey.IsGmailSendEmailScopeEnabled,
+        workspaceId: workspaceId,
+        value: true,
+      },
     ])
     .execute();
 };