message: Add `file` public module at crate root
diff: @@ -22,6 +22,11 @@ mod export {
  pub use hdf5_types::*;
  }
  + pub mod file {
  + pub use crate::hl::file::{File, FileBuilder};
  + pub use crate::hl::plist::file_create::*;
  + }
  +
  pub mod plist {
  pub use crate::hl::plist::{PropertyList, PropertyListClass};
  pub use crate::hl::plist::file_create::FileCreate;
  