Feature request: replace default Zsh elements with colorls

### Description

I noticed the main preview image is running Zsh. I've looked through the Zsh documentation but I'm unsure how to go about it. It would be cool if for example when you type cd [tab] it displayed the plugin's elements. How likely would it be to implement that or would you know how to go about this. Beautiful app btw!

- Relevant Issues : (none)
- Relevant PRs : (none)
- Type of issue :
- [ ] Installation
- [ ] Font-related
- [ x] Feature request
- [ ] Bug in existing feature
- [ ] Developer mode : Code quality / Tests / Documentation

Start by reading the Zsh documentation and inspecting how colorls is exposed as a Ruby gem and terminal `ls` replacement. The issue names no files, tests, or entry points, so first establish whether `cd [tab]` can display colorls elements and define the expected Zsh behavior before implementation. Done would mean an agreed, working tab-completion experience.

Written by the indexing model from the issue text.