Add a bunch of icons for file types used in programming

[sennoth]

Proposed icons

• CoffeeScript file .coffee
• CoffeeScript object notation file .cson
• CBOR serialised content .cbor
• Stylus CSS preprocessor .styl
• VueJS single file component .vue
• Recipes file for Just command runner .justfile
• WebAssembly file .wasm
• Vlang source file .v

[SmartFinn]

Thanks for the contribution.

It's hard to make the detail review to the PR. I'm just pointing on several issues that should be fixed:

1. Blurring objects on the icons. It may be fixed by align objects by the pixel grid (Shift-3 in Inkscape) (e.g. text-x-stylus.svg and application-x-cson.svg, only 64px is OK), or reducing count of objects (e.g. application-cbor.svg and application-wasm.svg) or object simplification (e.g. removing holes on the cup in text-x-coffeescript.svg for 16-32px sizes).
2. Papirus style doesn't allow using gradients for icons. Please replace the gradients with opacity on text-x-coffeescript.svg and text-x-vsrc.svg).

Here is a list of icons that are a good enough:

• application-x-cson@64x64.svg
• text-x-coffeescript@48x48.svg
• text-x-coffeescript@64x64.svg
• text-x-justfile@16x16.svg
• text-x-justfile@22x22.svg
• text-x-justfile@24x24.svg
• text-x-justfile@32x32.svg
• text-x-justfile@48x48.svg
• text-x-justfile@64x64.svg
• text-x-stylus@64x64.svg
• text-x-vue@32x32.svg
• text-x-vue@48x48.svg
• text-x-vue@64x64.svg
• text-x-vsrc@16x16.svg
• text-x-vsrc@22x22.svg
• text-x-vsrc@24x24.svg
• text-x-vsrc@32x32.svg
• text-x-vsrc@48x48.svg
• text-x-vsrc@64x64.svg