selenium: add Stealth feature to avoid automation detection

[double16]

Overview

When running Chrome via Selenium, try to hide that Chrome is being driven by web driver. Some sites/pages detect such as will not serve the page.

Checklist

• [X] Update help
• [X] Update changelog
• [X] Run ./gradlew spotlessApply for code formatting
• [X] Write tests
• [X] Check code coverage
• [X] Sign-off commits
• [X] Squash commits (single commit)
• [X] Use a descriptive title

For more details, please refer to the developer rules and guidelines.

[kingthorin]

To address the DCO requirement you'll need to sign-off the commit(s):

• https://github.com/zaproxy/zaproxy/blob/main/CONTRIBUTING.md#developer-certificate-of-origin
• https://git-scm.com/docs/git-commit#Documentation/git-commit.txt---signoff

---

Note there’s also a code scanning result which should be addressed.

[double16]

To address the DCO requirement you'll need to sign-off the commit(s):

* https://github.com/zaproxy/zaproxy/blob/main/CONTRIBUTING.md#developer-certificate-of-origin

* https://git-scm.com/docs/git-commit#Documentation/git-commit.txt---signoff

Note there’s also a code scanning result which should be addressed.

I looked through the commits using the Commits tab and they all showed Verified... signed by myself.

[kingthorin]

Signed and signed off are different things for Git.

[github-actions[bot]]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[double16]

I have read the CLA Document and I hereby sign the CLA recheck

[thc202]

The comment needs to exactly match I have read the CLA Document and I hereby sign the CLA (i.e. without recheck).

[double16]

I have read the CLA Document and I hereby sign the CLA