- Introduced environment variable support in documentation for Cloudflare, Cleanup, Deny Pages, IP Whitelist, JWT Validator, and FastCGI plugins.
- Updated plugin files with consistent headings, examples, and tables for easier configuration reference.
- Adjusted `README.md` and `plugins.md` to reflect updated plugin paths and environment variable usage.
- Enhanced Cloudflare Plugin with `use_builtin_ips` option to automatically use and update built-in IP ranges.
- Updated Cloudflare IP restoration logic, including metadata and HAProxy config generation.
- Reorganized plugin documentation with sidebar positions for improved accessibility.
- Extended Cloudflare documentation to detail built-in IP ranges, examples, and configurations.
- Added new test cases to validate `use_builtin_ips` functionality and file handling.
- Added individual markdown files with examples, configuration options, and HAProxy outputs for each plugin.
- Updated `README.md` to link plugin-specific documentation.
- Enhanced `plugins.md` to summarize plugin features and usage.
- Included Docker, Kubernetes, Swarm, and static configuration examples for all plugins.
