Add bnext to manual ES registry (#208)

Author: jose-reveni

schwifty/bank_registry/manual_es.json

@@ -30,5 +30,13 @@
     "bic": "UCJAES2MXXX",
     "name": "UNICAJA BANCO, S.A.",
     "short_name": "UNICAJA"
+  },
+  {
+    "country_code": "ES",
+    "primary": true,
+    "bank_code": "6717",
+    "bic": "BNXTESM2",
+    "name": "BNEXT ELECTRONIC ISSUER, EDE, S.L.",
+    "short_name": "Bnext"
   }
-]
+]