UN-2381 - Add autoApprove to GET /users/me/campaigns/{campaignId}

[sinatragianpaolo]

Summary

• Aggiunge il campo auto_approve alla classe Campaign (property, SELECT, assegnazione)
• Espone autoApprove nella risposta di GET /users/me/campaigns/{campaignId}
• Aggiorna schema OpenAPI e tipi TypeScript generati
• Aggiunge test per autoApprove: 0 (default) e autoApprove: 1

Test plan

• npm run test -- src/routes/users/me/campaigns/campaignId/_get/index.spec.ts

[github-actions]

Tests difference:

New Tests

< Route GET /users/me/campaigns/{campaignId}/ - autoApprove - Should return autoApprove: 0 by default
< when campaign has auto_approve = 1 - Should return autoApprove: 1

[coveralls]

coverage: 79.789% (+0.003%) from 79.786%
when pulling 7d56171 on UN-2381
into 9db51ee on develop.