Add file-descriptor mode column

[CKolkey]

I noticed that the order of the columns was being shuffled every time you restart neovim, so I changed the iterator slightly so the order is consistent every time.

I also added entry.lstat to be able to accurately display if a fd is a symlink or not, since stat follows links.

Finally, @ is appended to flagged fd's.

[jamestrew]

Nice!

I noticed that the order of the columns was being shuffled every time you restart neovim, so I changed the iterator slightly so the order is consistent every time.

This was also kinda bothering me but hadn't gotten around to it so nice again.

I'm not familiar with the @ symbol. I think that's a macOS thing right?

[jamestrew]

Also this is another reason it would be nice to have different highlighting for a single entry item.

Edit: I now have something cooking for this.

I also wonder, if it's worth adding the owner/group info as well. It doesn't have to be in this PR but something to consider.

[CKolkey]

It would be super cool to color the individual parts like your screenshot - I considered implementing that next but if you're on it already then thats awesome 🤩

You might be right, the @ is probably a mac thing. Its only on system dirs, so.. donno how linux/win does flags in stat output.

Lemme know if theres more you want to add here, otherwise this PR is done in my eyes

[fdschmidt93]

Thank you very much for your contributions!

Quick test looks like it works as intended and, while I agree we should maybe add owner and character highlighting, let's do that in a follow up PR.