[Server] adds a final eol to json output

src/plugins/server/server_batch.ml

@@ -117,6 +117,7 @@ let execute () =
         Senv.feedback "Output %S" output ;
         let out = open_out output in
         Js.pretty_to_channel out response ;
+        output_char out '\n';
         close_out out
       end files
   end

src/plugins/server/tests/batch/oracle/ast_services.out.json

@@ -100,4 +100,4 @@
       "data": "h"
     }
   }
-]
+]
\ No newline at end of file

src/plugins/server/tests/batch/oracle/kernel_services.out.json

-[ { "id": "getLogs", "data": [] }, { "id": "setLogs", "data": null } ]
+[ { "id": "getLogs", "data": [] }, { "id": "setLogs", "data": null } ]
\ No newline at end of file

src/plugins/server/tests/batch/oracle/wrong.out.json

@@ -11,4 +11,4 @@
       "comment": "ident is expected, object is given"
     }
   }
-]
+]
\ No newline at end of file