[Suggestion] Use icons/offset instead of icons/separator to manage icons of different width

Nobody has claimed this yet.

Hi,

When using unicode, icons might be of different width, making the filenames unaligned :
```
X foo
X faa
```

We can solve this issue by patching the fonts. However, when using lsd through ssh, we might not have full control over the fonts installed on the client.

Seeing that lsd correctly align the output columns, even if there is icons of different width :
```
X foo X fee
X faa X fuu
```

I suggest doing the following to print an entry :
1. store the cursor's current position.
2. print the icon.
3. go back to the previous position.
4. go forth by icons/offset characters.
5. print the filename.

This should solve this issue even if the icons differs by width.

Cordially,

Start by locating the lsd code that prints icons using icons/separator and compare it with the existing column-alignment behavior. Evaluate the proposed cursor-position and icons/offset approach, then verify that filenames remain aligned for icons with different Unicode widths, including the examples in the issue.

Written by the indexing model from the issue text.