feat: Migrate SAL to Cargo workspace

- Migrate individual modules to independent crates
- Refactor dependencies for improved modularity
- Update build system and testing infrastructure
- Update documentation to reflect new structure

redisclient/src/lib.rs

@@ -18,6 +18,7 @@
 //! use sal_redisclient::{execute, get_redis_client};
 //! use redis::cmd;
 //!
+//! # fn main() -> Result<(), Box<dyn std::error::Error>> {
 //! // Execute a simple SET command
 //! let mut set_cmd = redis::cmd("SET");
 //! set_cmd.arg("my_key").arg("my_value");
@@ -25,6 +26,8 @@
 //!
 //! // Get the Redis client directly
 //! let client = get_redis_client()?;
+//! # Ok(())
+//! # }
 //! ```
 
 mod redisclient;