feat: Add sal-text crate

- Add a new crate `sal-text` for text manipulation utilities.
- Integrate `sal-text` into the main `sal` crate.
- Remove the previous `text` module from `sal`.  This improves
  organization and allows for independent development of the
  `sal-text` library.

text/src/lib.rs

@@ -0,0 +1,59 @@
+//! SAL Text - Text processing and manipulation utilities
+//!
+//! This crate provides a comprehensive collection of text processing utilities including:
+//! - **Text indentation**: Remove common leading whitespace (`dedent`) and add prefixes (`prefix`)
+//! - **String normalization**: Sanitize strings for filenames (`name_fix`) and paths (`path_fix`)
+//! - **Text replacement**: Powerful `TextReplacer` for regex and literal replacements
+//! - **Template rendering**: `TemplateBuilder` using Tera engine for dynamic text generation
+//!
+//! All functionality is available in both Rust and Rhai scripting environments.
+//!
+//! # Examples
+//!
+//! ## Text Indentation
+//!
+//! ```rust
+//! use sal_text::dedent;
+//!
+//! let indented = "    line 1\n    line 2\n        line 3";
+//! let dedented = dedent(indented);
+//! assert_eq!(dedented, "line 1\nline 2\n    line 3");
+//! ```
+//!
+//! ## String Normalization
+//!
+//! ```rust
+//! use sal_text::name_fix;
+//!
+//! let unsafe_name = "User's File [Draft].txt";
+//! let safe_name = name_fix(unsafe_name);
+//! assert_eq!(safe_name, "users_file_draft_.txt");
+//! ```
+//!
+//! ## Text Replacement
+//!
+//! ```rust
+//! use sal_text::TextReplacer;
+//!
+//! let replacer = TextReplacer::builder()
+//!     .pattern(r"\d+")
+//!     .replacement("NUMBER")
+//!     .regex(true)
+//!     .build()
+//!     .expect("Failed to build replacer");
+//!
+//! let result = replacer.replace("There are 123 items");
+//! assert_eq!(result, "There are NUMBER items");
+//! ```
+
+mod dedent;
+mod fix;
+mod replace;
+mod template;
+
+pub mod rhai;
+
+pub use dedent::*;
+pub use fix::*;
+pub use replace::*;
+pub use template::*;