feat: add str shasum prop

const-macros-proc/src/lib.rs

@@ -87,6 +87,14 @@ fn extend_asset_tuple(ts: &mut TokenStream, buf: &[u8], mime: &str, sha256sum: [
                 extend_array(&mut ts, &sha256sum);
                 ts
             },
+            {
+                let mut ts = TokenStream::new();
+                let sha_str = sha256sum
+                    .iter()
+                    .fold(String::new(), |acc, b| acc + &format!("{b:02x}"));
+                ts.extend(std::iter::once(Literal::string(&sha_str)));
+                ts
+            },
         ]
         .into_iter(),
     );