Added a new certificate-based privilege escalation technique (ECS14-E…

[steponeerror]

Dear Maintainers,

Hello, I have learned a lot from HackTricks, and I would like to contribute to the project to help more people benefit from it. Due to my limited English proficiency, please forgive any grammar mistakes and give me a chance to improve them.

This PR primarily updates the domain-escalation.md document in the windows-hardening/active-directory-methodology/ad-certificates section. It introduces additional ADCS exploitation techniques (ECS14–ECS16), or at a minimum, guides readers to resources where they can quickly learn and understand these methodologies.

Due to language barriers, I have referenced some parts directly from the original articles. However, I made sure that all content is legitimate to quote, and I clearly indicated the sources.

Thank you for your time and consideration.

Best regards

[steponeerror]

@carlospolop

[carlospolop]

This is great @steponeerror, thank you very much!
Any other updates on the Windows/AD part of hacktricks are very appreciated as it's complicated for me to find the time to update those sections