Added show module which will eventually show DocDef.

src/action.rs

@@ -5,6 +5,7 @@ mod message;
 mod query;
 mod reply;
 mod request_data;
+mod show;
 mod user;
 
 pub use crate::document::{DocDef, Field, FieldType, Records};
@@ -15,4 +16,5 @@ pub use message::MsgAction;
 pub use query::Query;
 pub use reply::Reply;
 use request_data::RequestData;
+pub use show::Show;
 pub use user::UserAction;