feat: Adding docs

[tymondesigns]

This pull request introduces a new documentation site for the JSON Repair package, improves the organization and discoverability of documentation, and adds automation for syncing documentation changes. The README is simplified to point users to the new docs, and a GitHub Actions workflow is added to notify the docs repository on updates.

Documentation Overhaul and Site Addition:

• Added a comprehensive documentation site in the docs/ directory, including pages for introduction, installation, configuration options, repair examples, logging, and a quick start guide. The site uses a structured navigation and theming for better user experience. [1] [2] [3] [4] [5] [6] [7]

• Removed detailed configuration and logging instructions from the README.md, replacing them with a prominent link to the new documentation site for easier maintenance and clarity.

Automation and Workflow Improvements:

• Introduced a GitHub Actions workflow (.github/workflows/sync-docs.yml) to notify the external documentation repository (cortexphp/docs) whenever documentation in the docs/ directory is updated on the main branch.

Other Minor Improvements:

• Updated the requirements in the README.md to explicitly mention the need for the JSON PHP extension.