Add NFC Security Cheat Sheet

[Goinghome22]

Description

This Pull Request adds a new cheat sheet: NFC Security Cheat Sheet. It provides practical, high-impact security guidance for implementing NFC features securely on iOS and Android, covering Reader/Writer, Tag, and Host Card Emulation (HCE/SE) use cases.

This cheat sheet follows the official template and format rules required by the OWASP Cheat Sheet Series.

Checklist

Used the official Cheat Sheet template (templates/New_CheatSheet.md)

Ensured no Markdown validation errors

All content follows the required formatting rules

No images used (text-only cheat sheet)

All references formatted as TEXT

Verified the technical accuracy of the recommendations

Confirmed CI will pass (Markdown-link-check clean)

AI Tool Usage Disclosure (required)

I have used AI tools to generate or review parts of this PR. The LLM used is ChatGPT (OpenAI). I have reviewed, edited, and verified the accuracy of all content.

Issue Link (if applicable)

This PR addresses proposal: NFC Security Cheat Sheet (#1805)

Thank you

Thank you to the OWASP Cheat Sheet Series maintainers for reviewing this contribution.

[szh]

Also please use markdown headers. Right now it's just unorganized text.

[mackowski]

I agree with @jmanico and @szh Also, if possible, please run linter locally before pushing changes to PR.