Docs: add post "what is sealos"

[yangchuansheng]

🤖[deprecated] Generated by Copilot at 78bb915

Summary

📝🇨🇳✏️

This pull request updates and renames some blog posts in Chinese and English about sealos, a distributed cloud service based on Kubernetes. It also adds metadata and content for a new blog post in both languages, explaining what sealos is and how it differs from other solutions.

Sing, O Muse, of the skillful scribes who craft the blog posts
That tell of sealos, the swift and mighty tool for K8s clusters
How they adorn their words with metadata, rich and fair
And how they translate and rewrite their tales for the Chinese readers

Walkthrough

• Add metadata for the blog post in English (link)
• Update metadata and content for the blog post in Chinese, replacing Kubernetes with K8s (link, link, link, link, link, link, link)
• Add content for the rewritten and expanded blog post in Chinese, comparing Sealos and traditional cloud services (link)
• Rename blog post files to remove date prefixes and simplify URLs (link, link, link)

[sealos-ci-robot]

🤖 Generated by lychee action

Summary

Status	Count
🔍 Total	1045
✅ Successful	365
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	679
❓ Unknown	0
🚫 Errors	0

Full action output

Full Github Actions output

[sweep-ai]

Apply Sweep Rules to your PR?

• Apply: All new business logic should have corresponding unit tests.
• Apply: Refactor large functions to be more modular.
• Apply: Add docstrings to all functions and file headers.

[sealos-ci-robot]

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