feat: provide facilities to perform rewrite-tracking for tree-diffs in plumbing.

This effectively pulls down a higher-level implementation in `gix` to the plumbing
level, to allow it to be used there as well.

Author: Byron

gix-diff/src/lib.rs

@@ -46,6 +46,10 @@ pub mod rewrites;
 ///
 pub mod tree;
 
+///
+#[cfg(feature = "blob")]
+pub mod tree_with_rewrites;
+
 ///
 #[cfg(feature = "blob")]
 pub mod blob;