Add shell expansion

[1995parham]

Closes #9

Based on shellexpand crate.

[1995parham]

@danyspin97 Thanks for this awesome tool. I am new to rust, so if there is any issue with this PR I will be happy to fix.

[danyspin97]

Hi Parham and thank you for the contribution. I have looked up for shellexpand and it's not maintained anymore, so I'd prefer to avoid using it. I'd say that supporting the tilde expansion should be enough and we can manually expand it.

[1995parham]

Sure @danyspin97 you are right. I will change it to manually expand ~.

[1995parham]

I used dirs package, which is a dependency of xdg package, for finding the home and replacing the tilde with it. We can have more replace too if you want.

[1995parham]

@danyspin97 Sorry for bothering you, what do you think about this PR? Replacing ~ is enough?

[danyspin97]

Replacing ~ is enough?

Yea, I think it is enough. However, there are still a couple of issues that I have highlighted in the comments. Can you please have a look? Also, this function should also be applied to clap --config- parameter, but I'll implement this after this PR gets merged.

[1995parham]

@danyspin97 Thanks. I can't see those comments, can you please mention me there? I have only one comment about not using the shellexpand package, which I fixed.

[danyspin97]

Can you see them if you go to "Files changed" tab in this PR?

[1995parham]

I don't see anything there, I think you should complete your review, so I can see your comments.

[danyspin97]

Sorry, I hadn't actually sent the review. Fixed now 😄