Implement basic trade offer via email

src/Repository/OfferingRepository.php

@@ -33,6 +33,17 @@ class OfferingRepository extends ServiceEntityRepository
         ;
     }
 
+    public function findById($id)
+    {
+        return $this->createQueryBuilder('o')
+            ->andWhere('o.Id = :val')
+            ->setParameter('val', $id)
+            ->orderBy('o.id', 'ASC')
+            ->getQuery()
+            ->getResult()
+        ;
+    }
+
     /*
     public function findOneBySomeField($value): ?Offering
     {