Added text to img and iso icons

[madsrh]

A fix for #2171

I also added the same style icon for squashfs.

[madsrh]

We could also do something like this: (inspired by We10x which is inspired by Yaru 😄)

[clobrano]

+1 for the light version :)

[clobrano]

@madsrh, what do you think about moving the label few pixels towards the bottom? If you tried already, or just prefer this way, no worries, I think it's already good 👍

[madsrh]

@clobrano I agree. The placement here is simply taken from the mp3 icon, so I knew the text would render sharp. I could try to move them all slightly down, but @ubuntujaggers is really the pixel-fitting ninja. Perhaps he could take a look?

[Feichtmeier]

I agree with carlo moving them a bit down is a good idea @madsrh :)

[ubuntujaggers]

Is this text low enough:

[madsrh]

Perfect 🎉

[clobrano]

Yes 👍

[ubuntujaggers]

Pushed 👍