make guides for both versions

[gtsteffaniak]

Description

All changes are considered, but for now please only add english documentation.

• Documentation is english only (a requirement for now).
• Your documentation is accurate to the latest version of FileBrowser Quantum.
• If your styles are complex, you should test how they look and post a screenshot.
• Must pass build check.

Additional Details

For now, please update documentation in content/en/docs until a translation process is fully available.