docs: add youtube skills resource

[zerone0x]

Summary

• add youtube-skills repo to community resources in README and ultimate guide

Changes

• README: add YouTube Skills for Claude Code link
• guide/ultimate-guide.md: add youtube-skills to Awesome Lists

[FlorianBruniaux]

Thanks for this @zerone0x, the links look correct and the repo is legit (MIT, 101⭐).

One small thing before merging: the project requires a CHANGELOG.md entry for every change. Could you add a line under ## [Unreleased] at the top of CHANGELOG.md? Something like:

### Added

- **YouTube Skills for Claude Code** (`README.md`, `guide/ultimate-guide.md`): Added [youtube-skills](https://github.com/ZeroPointRepo/youtube-skills) to the community resources and Awesome Lists sections — 12 skills for YouTube search, transcripts, chapters, and content analysis.

Once that's in, I'll merge.

[FlorianBruniaux]

Thanks @zerone0x! youtube-skills has solid traction (214 stars, MIT, actively maintained). Merging this one over #26 since it covers all three files including the main guide and CHANGELOG. Also closes #10.

[FlorianBruniaux]

Merged manually due to CHANGELOG conflict with recent merges — all 3 changes (README, guide, CHANGELOG) are now in main. Closes #10.