- Removed the `herodo` binary from the monorepo. This was
done as part of the monorepo conversion process.
- Updated the `Cargo.toml` file to reflect the removal of
`herodo` and adjust dependencies accordingly.
- Updated `src/lib.rs` and `src/rhai/mod.rs` to use the new
`sal-vault` crate for vault functionality. This improves
the modularity and maintainability of the project.
