Add DocFX documentation and deploy to GitHub Pages

[RehabAbotalep]

Fixes #14

Add technical documentation generation and deployment using DocFX and GitHub Pages.

• DocFX Configuration:

  • Add docfx.json to configure DocFX for generating documentation.
  • Include metadata, source code directories, and output directory.

• Documentation Content:

  • Add index.md as the main landing page.
  • Add overview.md, getting-started.md, configuration.md, deployment.md, troubleshooting.md, and faq.md for detailed documentation sections.

• Customization:

  • Add custom.css for custom styles.
  • Add custom.html for custom layout.

• GitHub Pages Deployment:

  • Add .github/workflows/deploy-docs.yml to automate documentation deployment to GitHub Pages using GitHub Actions.

• README Update:

  • Update README.md to include instructions for generating and accessing the documentation.

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