feat: add function to extract user-defined metadata keys and integrat… (#1281)

Signed-off-by: 0xdx2 <xuedamon2@gmail.com>
Signed-off-by: houseme <housemecn@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: houseme <housemecn@gmail.com>

crates/utils/src/lib.rs

@@ -84,3 +84,5 @@ pub use notify::*;
 
 mod envs;
 pub use envs::*;
+
+pub mod obj;