add orderBy parameter to TxsByEvents (#8815)

* add orderBy parameter to grpc query

* add orderby parameter

* change orderBy param to enum

* lint

* proto lint

* add changelog

* Update x/auth/tx/service.go

Co-authored-by: Amaury <1293565+amaurym@users.noreply.github.com>

Co-authored-by: Alessio Treglia <alessio@tendermint.com>
Co-authored-by: Jonathan Gimeno <jgimeno@gmail.com>
Co-authored-by: Amaury <1293565+amaurym@users.noreply.github.com>

x/auth/tx/service.go

@@ -170,6 +170,6 @@ func parseOrderBy(orderBy txtypes.OrderBy) string {
 	case txtypes.OrderBy_ORDER_BY_DESC:
 		return "desc"
 	default:
-		return "asc"
+		return "" // Defaults to Tendermint's default, which is `asc` now.
 	}
 }