SELinux -Z option integration

### Description

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

Hi,

I've recently found that's not possible to pass -Z arguments to the command, like for example

```bash
ls -lrtZ /home/$USER | grep -v $(matchpathcon /home/$USER)
```

Could it be possible to add it?

Thanks!

No implementation files or tests are named. Start by tracing how colorls parses and forwards ls options, then verify the command shown in the issue works with -Z; done means SELinux-related -Z arguments are accepted and passed through without breaking normal options.

Written by the indexing model from the issue text.