[FEATURE REQUEST] New package manager: Microsoft Store thought new `store` command-line tool

### Please confirm these before moving forward.

- [x] I have searched for my feature proposal and have not found a work-in-progress/duplicate/resolved/discarded issue.
- [x] This proposal is a completely new feature. If you want to suggest an improvement or an enhancement, please use [this template](https://github.com/marticliment/WingetUI/issues/new?assignees=marticliment&labels=enhancement&projects=&template=enhancement-improvement.yml&title=%5BENHANCEMENT%5D+%28Enter+your+description+here%29).

### Describe the new feature

Microsoft recently released new `store` command-line tool, it can search, install and update apps, show info and such, more info below.

https://www.windowscentral.com/microsoft/windows-11/microsoft-just-made-a-command-line-version-of-the-microsoft-store-for-windows-11-install-and-update-your-apps-without-a-gui

https://blogs.windows.com/windowsdeveloper/2026/02/11/enhanced-developer-tools-on-the-microsoft-store/

### Describe how this new feature could help users

UnigetUI will get ability to install/backup apps installed from Microsoft Store.