turn pxar::flags into bitflags, pxar::Flags

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/pxar/mod.rs

@@ -52,10 +52,12 @@ pub(crate) mod create;
 pub(crate) mod dir_stack;
 pub(crate) mod extract;
 pub(crate) mod metadata;
-pub mod flags;
 pub mod fuse;
 pub(crate) mod tools;
 
+mod flags;
+pub use flags::Flags;
+
 pub use create::create_archive;
 pub use extract::extract_archive;