feat(weibo): support for-you and following feed types

[iiilin]

Description

现在拉取 opencli weibo feed 是拉的是 unreadfriendstimeline 这个接口，也就是对应全部关注的消息流，这个如果好友消息读完了，拉到的就都是乱七八糟的推荐消息

于是我加了一个拉取 friendstimeline 的逻辑，这个是对应的最新微博的接口，这个是严格拉取关注人的微博，且按时间排序，不会拉到未关注人的微博

参数命名上参考了 twitter 的命名风格

• following 对应最新微博的 friendstimeline 的逻辑
• for-you 对应了全部关注的推荐逻辑

Related issue:

Type of Change

• 🐛 Bug fix
• [☑️] ✨ New feature
• [☑️] 🌐 New site adapter
• 📝 Documentation
• ♻️ Refactor
• 🔧 CI / build / tooling

Checklist

• I ran the checks relevant to this PR
• I updated tests or docs if needed
• [☑️] I included output or screenshots when useful

Documentation (if adding/modifying an adapter)

• Added doc page under docs/adapters/ (if new adapter)
• Updated docs/adapters/index.md table (if new adapter)
• Updated sidebar in docs/.vitepress/config.mts (if new adapter)
• Updated README.md / README.zh-CN.md when command discoverability changed
• Used positional args for the command's primary subject unless a named flag is clearly better
• Normalized expected adapter failures to CliError subclasses instead of raw Error

Screenshots / Output

opencli weibo feed help

opencli weibo feed 和原有逻辑一致

opencli weibo feed --type following 拉取关注人的最新微博

[Astro-Han]

This also looks reasonable to me. The new feed --type behavior matches the problem described in the PR, and I did not find a clear blocking issue in the change itself.