build: Created justfile to make life easier

CONTRIBUTING.md

@@ -48,7 +48,8 @@ cz commit
 1. Clone this repo
 2. Run `cargo test` to set up hooks
 3. Make changes
-4. Run the application using `make run` or `cargo run`
+4. Run the application using `just run` or `just run`
+   - Install `just` (`cargo install just`) if you haven't already to use the [justfile](./justfile) in this project.
 5. Commit changes. This will trigger pre-commit hooks that will run format, test and lint. If there are errors or 
    warnings from Clippy, please fix them.
 6. Push your code to a new branch named after the feature/bug/etc. you're adding. This will trigger pre-push hooks that