Add file icons for Zig, Julia, SCSS, HCL, Nix, and Roc

[PixelJanitor]

Release Notes:

• Added file icons for Zig, Julia, SCSS, HCL, Nix, and Roc files.

[TanklesXL]

I just wanna say that I love that Zed is adding a gleam file icon 💜

I have shared this with the gleam core team so they can give some feedback about how Lucy (gleam's mascot) looks here.

For transparency, i'll quote what I told @JosephTLyons when he first shared the PR in the gleam discord:

I just find it's giving more pentagon energy and less star energy 😆

[lpil]

Hey! This is cool!

The Gleam one looks cute but on my phone now it looks a bit pointy and seems to curves inwards rather than outwards.

Is it possible to see what it would looks like in the UI?

[JosephTLyons]

Hey! This is cool!

The Gleam one looks cute but on my phone now it looks a bit pointy and seems to curves inwards rather than outwards.

Is it possible to see what it would looks like in the UI?

I can compile it and provide screenshots tonight.

Huh, strange. I compiled and icons are not showing up for me - maybe I missed a step.

[lpil]

Jen in the Gleam discord is working on an icon and I think he'll share it here soon for consideration

[JosephTLyons]

If the rest of the icons are good, we could remove gleam from this PR and merge it - @maxbrunsfeld @iamnbutler?

Edit: @george-grec - the intention would be that we would open a new PR for the Gleam icon, and not block the rest of the icons in this PR from being shipped in tomorrow's preview release.

[george-grec]

@JosephTLyons no worries, I'm just an impatient guy, I appreciate the work!

[JosephTLyons]

@JosephTLyons no worries, I'm just an impatient guy, I appreciate the work!

We want the Gleam icon in Zed too!