[IMPROVEMENT] Default Install Directory for packages Without Specific Directories

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

### Describe the improvement

So there's an option to change the default install directory for programs in the Winget Options. However it's currently "Package's Default" or "Custom Directory". The issue is that the Only things I would want in a Custom Directory are packages Without defaults (Like "Portable" type apps, the two I've just installed for example are "Rufus" and "ZipInstaller"). Especially since the "Default" in that situation is Wildly inconvenient

C:\Users\\AppData\Local\Microsoft\WinGet\Packages\

I propose putting a Dropdown for "Install Location:" with the List Items "Packages without Defaults" (As the Default) and "All Packages". And Populating the current "Package's Default" Field with the Current Location from above to both show users where the heck they're going (Cause that information isn't available Anywhere in the UI. It's greyed out in the Context Menu for the affected installed items, and not on the Details Screen for them either), AND to make it more obvious what they're changing.

Else changing it to "Install Location for packages without default locations:" likewise populated with the current address, and Checkbox Below (Unselected by Default) "Use for All Installations". Which is probably neater.

### Describe how this improvement could help users

Doing this makes it clear where packages without default directories are being installed AND provides a useful user option for these packages while not impacting programs With defaults.