Add icon for .zig

[CodyKoInABox]

Format to support

• .zig
• Official icon: https://avatars.githubusercontent.com/u/27973237?s=160&v=4
• Files extensions: *.zig

[CodyKoInABox]

Zig is a general-purpose programming language and toolchain for maintaining robust, optimal and reusable software. https://ziglang.org/

[EmmanuelBeziat]

Hi!

The icon has been added in the new v2.1.98, check it out :)

Thanks!

[CodyKoInABox]

Amazing! Thank you =)