docs: Update emoji-key.md with updated emoji types

[KhushiPandey8]

What:
Extended the Emoji Key list with additional emojis and categories like community, social, and legal.

Why:
To reflect new contribution types such as community support, social media promotion, and legal compliance.

How:
Updated the emoji-key list in the contributing documentation with the following emojis:

• 🔊 audio | Audio (Development) | Podcasts, background music, or sound effects
• 📝 blog | Blogposts (Content) | Links to the blogpost
• 📖 doc | Documentation (Documentation) | Wiki, README, API Docs
• 🎨 design | Design (UI/UX) | Logo, branding, UI improvements
• 🤝 community | Community Support (Community) | Helping users, moderating discussions
• 💰 sponsor | Sponsorship (Financial) | Funding, grants, donations
• 📱 social | Social Media (Promotion) | Sharing on social media, marketing efforts
• ⚙️ ci | CI/CD (DevOps) | Contributions to automated workflows, GitHub Actions
• ⚖️ legal | Legal (Compliance) | Licensing, GDPR, security policies

Checklist:

• Documentation
• Ready to be merged
• Added myself to contributors table.
  Bot Usage

[lwasser]

@all-contributors please add @KhushiPandey8 for docs

[allcontributors]

@lwasser

I've put up a pull request to add @KhushiPandey8! 🎉

[lwasser]

Similar to the previous PR that I merged, we should merge this and then pull it into our docs-upgrade branch via a cherry pick . so i'm not going to merge until i'm ready to do that so we don't lose the updates. Thank you @KhushiPandey8 for this PR!! ❤️

[lwasser]

Oops - it looks like we need to lint the pr as well before we can merge.

[JimMadge]

@lwasser I think we need to think about whether these new contribution types overlap with the existing types, and if they have been implemented in the CLI/app before adding to the docs.

[lwasser]

Oh gosh! I thought this was just an update for undocumented types not new functionality. We can't document types that don't exist so if that is the case this should be an feature issue.