[Feature Request] Option to download full package manifests/metadata along with installers (like native winget download)

[emre-001]

Please confirm these before moving forward.

• I have searched for my feature proposal and have not found a work-in-progress/duplicate/resolved/discarded issue.
• This improvement refers to an existing feature. If you want to suggest a new feature, please use this template.
• This improvement is not a bug. If you want to report a bug, please use this template.

Describe the improvement

First of all, thank you for this amazing software! I use UniGetUI to maintain a personal/local offline software archive.
Currently, when I use the "Download selected installers" option for Winget packages, UniGetUI only extracts and downloads the raw installer executable (e.g., Devolutions.UniGetUI.win-x64.2026.1.10.0.exe). However, when I run winget download Devolutions.UniGetUI directly in the terminal, Winget downloads the installer file along with its companion Manifest (YAML) files and structures them properly.
It would be incredibly helpful to have a toggle or an option in UniGetUI's settings (e.g., "Download complete package manifests/metadata"). When enabled, UniGetUI should mirror the native winget download behavior, preserving the full package structure and manifest files instead of downloading just the isolated .exe/.msi file.

Describe how this improvement could help users

This feature would be highly beneficial for users who build offline installation repositories, as having the original manifest files is crucial for maintaining an organized and reproducible software archive.