feat: Add PostgreSQL and Redis client support

- Add PostgreSQL client functionality for database interactions.
- Add Redis client functionality for cache and data store operations.
- Extend Rhai scripting with PostgreSQL and Redis client modules.
- Add documentation and test cases for both clients.

Cargo.toml

@@ -11,32 +11,41 @@ categories = ["os", "filesystem", "api-bindings"]
 readme = "README.md"
 
 [dependencies]
-tera = "1.19.0"    # Template engine for text rendering
+tera = "1.19.0" # Template engine for text rendering
 # Cross-platform functionality
 libc = "0.2"
 cfg-if = "1.0"
-thiserror = "1.0"  # For error handling
-redis = "0.22.0"   # Redis client
+thiserror = "1.0" # For error handling
+redis = "0.22.0" # Redis client
+postgres = "0.19.4" # PostgreSQL client
+tokio-postgres = "0.7.8" # Async PostgreSQL client
+postgres-types = "0.2.5" # PostgreSQL type conversions
 lazy_static = "1.4.0" # For lazy initialization of static variables
-regex = "1.8.1"    # For regex pattern matching
-serde = { version = "1.0", features = ["derive"] } # For serialization/deserialization
+regex = "1.8.1" # For regex pattern matching
+serde = { version = "1.0", features = [
+    "derive",
+] } # For serialization/deserialization
 serde_json = "1.0" # For JSON handling
-glob = "0.3.1"     # For file pattern matching
-tempfile = "3.5"   # For temporary file operations
-log = "0.4"        # Logging facade
+glob = "0.3.1" # For file pattern matching
+tempfile = "3.5" # For temporary file operations
+log = "0.4" # Logging facade
 rhai = { version = "1.12.0", features = ["sync"] } # Embedded scripting language
-rand = "0.8.5"     # Random number generation
-clap = "2.33"      # Command-line argument parsing
+rand = "0.8.5" # Random number generation
+clap = "2.33" # Command-line argument parsing
 
 # Optional features for specific OS functionality
 [target.'cfg(unix)'.dependencies]
-nix = "0.26"       # Unix-specific functionality
+nix = "0.26" # Unix-specific functionality
 
 [target.'cfg(windows)'.dependencies]
-windows = { version = "0.48", features = ["Win32_Foundation", "Win32_System_Threading", "Win32_Storage_FileSystem"] }
+windows = { version = "0.48", features = [
+    "Win32_Foundation",
+    "Win32_System_Threading",
+    "Win32_Storage_FileSystem",
+] }
 
 [dev-dependencies]
-tempfile = "3.5"   # For tests that need temporary files/directories
+tempfile = "3.5" # For tests that need temporary files/directories
 
 [[bin]]
 name = "herodo"