[FEATURE REQUEST] Add Nim Package Manager In UniGetUI

[rc-chuah]

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.

Describe the new feature

Can You Add Nim Package Manager In UniGetUI Such As: Nimble (nimble) And Nimph (nimph).

Describe how this new feature could help users

It Will Benefit Lots Of People And Save Time Too.