New document (#5299)

* add new doc (#5175)

Co-authored-by: dreamer6680 <146868355@qq.com>

* Test docs (#5235)

* fix: change the page of doc

* chore: add new dependencies, update global styles/layout, optimize docs, add Feishu & GitHub icons, update API examples

* fix: docs/index 404 not found

* Update environment variable names, optimize styles, add new API routes, fix component styles, adjust documentation, and update GitHub and Feishu icons

* update readme

* feat: add a linkfastgpt compontent

* feat: update new doc

* fix:remove unuse page and redirect homepage to docs (#5288)

* fix：remove some unuse doc

* fix: redirect homepage to doc

* git ignore

* fix:navbar to index (#5295)

* sidbar

* fix: navtab unlight (#5298)

* doc

---------

Co-authored-by: dreamer6680 <1468683855@qq.com>
Co-authored-by: dreamer6680 <146868355@qq.com>

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document/public/favicon/site.webmanifest

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