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.

Cargo.toml

@@ -11,7 +11,7 @@ categories = ["os", "filesystem", "api-bindings"]
 readme = "README.md"
 
 [workspace]
-members = [".", "vault"]
+members = [".", "vault", "git"]
 
 [dependencies]
 hex = "0.4"
@@ -60,6 +60,7 @@ russh = "0.42.0"
 russh-keys = "0.42.0"
 async-trait = "0.1.81"
 futures = "0.3.30"
+sal-git = { path = "git" }
 
 # Optional features for specific OS functionality
 [target.'cfg(unix)'.dependencies]