[FEATURE REQUEST] Ability to select which pip (or package manager to use)

[jamievlin]

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 proposal is a completely new feature. If you want to suggest an improvement or an enhancement, please use this template.

Describe the new feature

In the settings window, there is an additional button to switch between different pip/python distributions (e.g. C:/Program Files/Python313, %LocalAppData%/Programs/Python39/, etc). Uniget will use that pip to determine which package needs updating.

Describe how this new feature could help users

Right now, I have multiple python installations in my system (3.13 for day-to-day use, 3.9 for a specific project I'm working on in which I could not use 3.13). The pip option in UnigetUI shows the 3.9 version, not the 3.13 version. Hence I could not see which packages needs updating for 3.13, which is the version I use the most.

[marticliment]