x/authz charge gas for expensive authorizations (#8995)

* WIP

* Add consume gas

* update authz.go

* add build flag

* Update x/staking/types/authz.go

* Update x/staking/types/authz.go

* add tests docs

* review changes

* fix operations

* Update x/authz/types/msgs.go

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

* review changes

* update gas cost

* review changes

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

types/msgservice/msg_service.go

@@ -3,6 +3,7 @@ package msgservice
 import (
 	"context"
 	"fmt"
+	"strings"
 
 	"github.com/gogo/protobuf/proto"
 	"google.golang.org/grpc"
@@ -42,3 +43,9 @@ func RegisterMsgServiceDesc(registry codectypes.InterfaceRegistry, sd *grpc.Serv
 func noopInterceptor(_ context.Context, _ interface{}, _ *grpc.UnaryServerInfo, _ grpc.UnaryHandler) (interface{}, error) {
 	return nil, nil
 }
+
+// IsServiceMsg checks if a type URL corresponds to a service method name,
+// i.e. /cosmos.bank.Msg/Send vs /cosmos.bank.MsgSend
+func IsServiceMsg(typeURL string) bool {
+	return strings.Count(typeURL, "/") >= 2
+}