Add deprecated feature and migrate string_proc to just_fmt

- Add `deprecated` feature flag to Cargo.toml
- Gate `string_proc` module behind both `deprecated` and `string_proc`
  features
- Replace internal `string_proc` dependency with `just_fmt` crate in
  constants macros
- Mark all `string_proc` modules as deprecated with migration
  instructions
- Remove `string_proc` dependency from sheet system

1 files changed, 1 insertions, 1 deletions

diff --git a/systems/_asset/src/asset.rs b/systems/_asset/src/asset.rs
index a3b1c6a..cdcae3c 100644
--- a/systems/_asset/src/asset.rs
+++ b/systems/_asset/src/asset.rs
@@ -384,7 +384,7 @@ async fn check_handle_is_cross_directory(
 
 fn check_path(file_name: &OsStr) -> Result<Cow<'_, str>, PrecheckFailed> {
     let file_name_str = file_name.to_string_lossy();
-    
+
     // When operating on a TEMP_FILE or LOCK_FILE,
     // names like `~~foo.txt` or `.tmp_.tmp_foo.txt` would be generated
     // This is not expected and should result in an error