[IMPROVEMENT] Software package details - Use the automatic RSS changelog for each GitHub repository

### 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 improvement refers to an existing feature. If you want to suggest a new feature, please use [this template](https://github.com/Devolutions/UniGetUI/issues/new?labels=new-feature&projects=&template=feature-request.yml&title=%5BFEATURE+REQUEST%5D+%28Enter+your+description+here%29).
- [x] This improvement is not a bug. If you want to report a bug, please use [this template](https://github.com/Devolutions/UniGetUI/issues/new?labels=bug&projects=&template=bug-issue.yml&title=%5BBUG%5D+%28Enter+your+description+here%29).

### Describe the improvement

For the Windows Terminal Repository - the RSS/ATOM Feed is available under https://github.com/microsoft/terminal/releases.atom it's every time the same structure to receive the actual changelog:

- https://github.com/microsoft/terminal/releases/tag/v1.24.10921.0
- https://github.com/microsoft/terminal/
- https://github.com/microsoft/terminal/releases.atom

Screenshot 1 (Windows Terminal, without changelog):

Screenshot 2 (with changelog, promote the Changelog as central information in the windows)

This allows all changelogs for GitHub repositories to be automated.

I would appreciate faster access to the changelogs themselves, i.e., a view that displays only the changelog without further details. For example, via a right-click context menu for each package ("View Changelog").

Ideally, the list would be expandable for all packages to be installed, with information about the changes (I really like to check the progress, especially new features, so they can be identified and tested immediately).

Alternatively, a "View Changelog" link in the list view would open a small changelog window.

### Describe how this improvement could help users

Ideally, the list would be expandable for all packages to be installed, with information about the changes (I really like to check the progress, especially new features, so they can be identified and tested immediately).