feat: add keys, get, set, has and del aliases

[Atinux]

❓ Type of change

• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)

📚 Description

For a sexier usage :)

📝 Checklist

• I have added a test
• I have updated the documentation accordingly.

[cloudflare-pages]

Deploying with    Cloudflare Pages

Latest commit:	df1c404
Status:	✅  Deploy successful!
Preview URL:	https://05ce2115.unstorage.pages.dev
Branch Preview URL:	https://feat-aliases.unstorage.pages.dev

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.15%. Comparing base (4d61c78) to head (76560ec).
Report is 3 commits behind head on main.

❗ Current head 76560ec differs from pull request most recent head df1c404. Consider uploading reports for the commit df1c404 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #402      +/-   ##
==========================================
+ Coverage   65.05%   65.15%   +0.10%     
==========================================
  Files          39       39              
  Lines        4055     4067      +12     
  Branches      487      491       +4     
==========================================
+ Hits         2638     2650      +12     
  Misses       1408     1408              
  Partials        9        9              

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