feat: Add CI/CD workflows for testing and publishing SAL crates

- Add a workflow for testing the publishing setup
- Add a workflow for publishing SAL crates to crates.io
- Improve crate metadata and version management
- Add optional dependencies for modularity
- Improve documentation for publishing and usage

rhai/README.md

@@ -1,7 +1,16 @@
-# SAL Rhai - Rhai Integration Module
+# SAL Rhai - Rhai Integration Module (`sal-rhai`)
 
 The `sal-rhai` package provides Rhai scripting integration for the SAL (System Abstraction Layer) ecosystem. This package serves as the central integration point that registers all SAL modules with the Rhai scripting engine, enabling powerful automation and scripting capabilities.
 
+## Installation
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+sal-rhai = "0.1.0"
+```
+
 ## Features
 
 - **Module Registration**: Automatically registers all SAL packages with Rhai engine