cmd/gf/genpbentity: For database fields of type json or jsonb, I want to support exporting them as google.protobuf.Value type

[zishang520]

Is your feature request related to a problem?

Option Yes

Describe the solution you'd like

Change the original export type from string to google.protobuf.Value type:

syntax = "proto3";

package pbentity;

option go_package = "test";

message Test {
    int64                     id          = 1   [json_name = "id"];
    string                    value       = 2   [json_name = "value"];
}

Describe alternatives you've considered

syntax = "proto3";

package pbentity;

option go_package = "test";

import "google/protobuf/struct.proto";

message Test {
    int64                     id          = 1   [json_name = "id"];
    google.protobuf.Value     value       = 2   [json_name = "value"];
}

Additional

No response