refactor(docs): migrate legacy Markdown files to MkDocs structure

[saudadez21]

Description

This PR migrates the project's legacy Markdown documentation into a structured MkDocs setup.

It introduces a new mkdocs.yml configuration, organizes existing documentation into appropriate sections, and prepares the repository for automated deployment via GitHub Actions.

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Changes

• Converted old standalone .md files into MkDocs-compatible pages
• Introduced mkdocs.yml configuration file
• Added a new directory structure under docs/
• Updated internal links and navigation
• Integrated MkDocs Material theme
• Added auto-deploy workflow for documentation (deploy_docs.yml)
• Removed outdated or redundant Markdown files
• Ensured all pages render correctly under MkDocs navigation

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Motivation

The previous documentation consisted of scattered Markdown files without a unified structure.

Migrating to MkDocs improves:

• readability
• navigation
• long-term maintainability

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Type of change

• Documentation update

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Checklist

• I have tested my changes locally
• I have updated documentation if needed
• Code follows the project's coding style