Documentation Improvement: Add Examples for Custom TrailblazeTool Creation

# Documentation Improvement: Add Examples for Custom TrailblazeTool Creation

## Background
The README provides a great overview of the features of Trailblaze, including the ability to extend functionality using custom `TrailblazeTool`s. However, it lacks specific examples or a step-by-step guide on how developers can create their own custom tools for the agent.

## Suggested Enhancement
To enhance the documentation, I suggest adding a dedicated section that includes:
- A brief introduction to what a `TrailblazeTool` is and its benefits.
- Clear, annotated code examples showing how to create a simple `TrailblazeTool`.
- Instructions on how to integrate the custom tool into the Trailblaze framework.
- Use cases where custom tools can significantly enhance testing capabilities.

This enhancement would help new users understand the extensibility of Trailblaze better, encouraging more contributions and adoption of the framework.