Add README for Formal Mathematics Library Visualizer

This README introduces a GitHub Action for generating visualizations of formal mathematics libraries in Agda, detailing its steps and providing a live example link.

Author: JobPetrovcic

README.md

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+# Formal Mathematics Library Visualizer
+
+## Overview
+
+This GitHub Action automatically generates interactive visualizations for formal mathematics libraries written in **Agda**.
+
+Designed to integrate seamlessly into CI/CD pipelines, the tool performs the following steps:
+1.  **Environment Setup**: runs within a Docker container with pre-configured compilers (Agda, GHC) and Python dependencies.
+2.  **Compilation**: Type-checks the library and generates structural data (e.g., Agda S-expressions).
+3.  **Processing**: Parses the module dependencies and definitions to construct a directed graph.
+4.  **Visualization**: Outputs web-ready assets (interactive graphs, standalone HTML, or embeddable components) that can be deployed directly to GitHub Pages.
+
+## Result
+
+You can view a live example of the visualization generated for the **Agda Unimath** library here:
+
+[**https://unimath.github.io/agda-unimath/VISUALIZATION.html**](https://unimath.github.io/agda-unimath/VISUALIZATION.html)