git-ref-format: qualified macro

Add a `qualified!` macro to the set of git-ref-format macros. This
allows the construction of a `refs/<cat>/<name>` reference from a
string literal.

Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>

git-ref-format/src/lib.rs

@@ -144,6 +144,8 @@ pub mod name {
     pub use git_ref_format_macro::component;
 }
 
+#[cfg(any(feature = "macro", feature = "git-ref-format-macro"))]
+pub use git_ref_format_macro::qualified;
 #[cfg(any(feature = "macro", feature = "git-ref-format-macro"))]
 pub use git_ref_format_macro::refname;