feat: add getCashinDetails method to TelepagosIntegrationService and corresponding tests

app/Domains/Integration/Services/TelepagosIntegrationService.php

@@ -130,6 +130,22 @@ class TelepagosIntegrationService extends BaseIntegrationService
         ]);
     }
 
+    /**
+     * Get the details of a cash-in payment.
+     *
+     * @param int $cashinId
+     * @return array
+     * @throws Exception
+     */
+    public function getCashinDetails(int $cashinId): array
+    {
+        $response = $this->client()->get("/v2/payment/cashin/{$cashinId}");
+
+        return $this->handleResponse($response, 'get cash-in details', [
+            'cashin_id' => $cashinId,
+        ]);
+    }
+
     /**
      * Handle the Telepagos API response, logging any failures and throwing Exceptions.
      *