feat: Convert SAL to a Rust monorepo

- Migrate SAL project from single-crate to monorepo structure
- Create independent packages for individual modules
- Improve build efficiency and testing capabilities
- Update documentation to reflect new structure
- Successfully convert the git module to an independent package.

docs/docs/rhai/git_module_tests.md

@@ -16,13 +16,13 @@ Additionally, there's a runner script (`run_all_tests.rhai`) that executes all t
 To run all tests, execute the following command from the project root:
 
 ```bash
-herodo --path src/rhai_tests/git/run_all_tests.rhai
+herodo --path git/tests/rhai/run_all_tests.rhai
 ```
 
 To run individual test scripts:
 
 ```bash
-herodo --path src/rhai_tests/git/01_git_basic.rhai
+herodo --path git/tests/rhai/01_git_basic.rhai
 ```
 
 ## Test Details