[IMP] crm_iap_lead_enrich: ease testing for the enrich service

Testing the enrich service was not possible since the endpoint was hardcoded.
This commit introduces a config parameter that allows overriding it.

Done in preparation of task 2081471.

PR #40349
Task 2081471

addons/crm_iap_lead_enrich/models/iap_enrich_api.py

@@ -16,7 +16,8 @@ class IapEnrichAPI(models.AbstractModel):
         dbuuid = self.env['ir.config_parameter'].sudo().get_param('database.uuid')
         params['account_token'] = account.account_token
         params['dbuuid'] = dbuuid
-        return iap.jsonrpc(self._DEFAULT_ENDPOINT + local_endpoint, params=params, timeout=300)
+        base_url = self.env['ir.config_parameter'].sudo().get_param('enrich.endpoint', self._DEFAULT_ENDPOINT)
+        return iap.jsonrpc(base_url + local_endpoint, params=params, timeout=300)
 
     @api.model
     def _request_enrich(self, lead_emails):