feat: add ability to select multiple packages

[darukutsu]

fixes #26

• [x] for now there is problem after installing/uninstalling not clearing visual marks due to we list cached search... will fix later
• [ ] needs testing
• [x] also can you provide me cli examples for all the TODOs marks in code, so I can implement them somehow, i have no idea what it looks like, maybe document those also in manpage as well
• [x] code itself is trash, I don't like how it looks feel free to change/optimize it edit: I'm more or so satisfied...
• [x] add ability to mark for reinstallation

Quick video how it works for now:

https://github.com/user-attachments/assets/316b3d94-8607-423a-9e30-807de7fd5e45