Improve documentation and dependency management for nginx-waf

[StrangeRanger]

This pull request marks the release of version 1.0.0 of the Nginx WAF project, transitioning it out of beta. The main improvements focus on safer update procedures for Git repositories, better cleanup of build artifacts, and enhanced documentation. The most important changes are grouped below:

Update Safety and Build Process Improvements:

• Added a confirm_git_pull function to prompt the user before pulling updates in existing Git checkouts when local changes are present, preventing accidental overwrites. This is now used for ModSecurity, ModSecurity-nginx, and the OWASP Core Rule Set repositories. [1] [2] [3] [4]
• The script now cleans up any existing downloaded Nginx tarball and extracted source directory before downloading and extracting a fresh copy, ensuring a clean build environment.

Documentation and Versioning:

• Updated the version to v1.0.0 and removed the beta warning from the README.md. [1] [2]
• Added a changelog entry for v1.0.0, documenting the new confirmation prompt, improved ignore rules, and build cleanup.

Code Quality and Maintainability:

• Improved inline documentation for utility functions, clarifying parameters and side effects. [1] [2]
• Removed obsolete TODOs and cleaned up unused code sections. [1] [2]

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
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[Copilot]

Pull request overview

This PR finalizes the nginx-waf hardening script as v1.0.0 by improving update safety for embedded Git checkouts, ensuring cleaner rebuilds of the Nginx module, and updating project documentation/changelog accordingly.

Changes:

• Added confirm_git_pull and integrated it into update flows for ModSecurity, ModSecurity-nginx, and CRS to avoid accidental overwrites when local changes exist.
• Ensured repeatable builds by removing any existing downloaded Nginx tarball and extracted source directory before fetching/extracting again.
• Updated documentation/versioning (README beta warning removal, v1.0.0 changelog entry) and added .gitignore rules for generated build artifacts.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
hardening/Nginx WAF/nginx-waf.bash	Adds confirm_git_pull, uses it for existing clones, and cleans Nginx tarball/source dir before rebuilding.
hardening/Nginx WAF/README.md	Removes beta warning from the documentation.
hardening/Nginx WAF/CHANGELOG.md	Adds v1.0.0 release notes (prompt + cleanup + ignore rules).
.gitignore	Ignores ModSecurity/ModSecurity-nginx and Nginx build artifacts generated by the script.

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