add pub access for Ref data

[sa68ru]

Allows use data from Ref via pattern match syntax

async fn example(db: Ref<sea_orm::DatabaseConnection>) -> Result<(), AppError> {
  ...
  .exec(&*db).await?;
  ...
}
async fn example(Ref(db): Ref<sea_orm::DatabaseConnection>) -> Result<(), AppError> {
  ...
  .exec(&db).await?;
  ...
}