#2838 - TECH ajout de monitoring sur les API siret (INSEE et annuaire des entreprises)

[JeromeBu]

• refacto getSiretGateway
• WIP refacto Insee API gateway to use shared routes

[gitguardian]

️✅ There are no secrets present in this pull request anymore.

If these secrets were true positive and are still valid, we highly recommend you to revoke them.
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specific commits where they were detected. Once a secret has been leaked into a git
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