Add more language tests

[connorholyday]

The tests directory could do with more languages.

Each file should contain a good representation of the language with a variety of data structures to capture a good range of syntax highlighting.

• JSON
• Twig
• Pug
• HAML
• Go
• Scss
• Sass

[alexanderbrown21]

Hey is it possible I can pick this up for the json examples and if so what so of structure for the source would you want? E. G explaining particular structures like here is how it looks for inner entities and here is how you do a json array? I see from examples is sample source code so I imagine you want it done like this

E. G.

widget": {
"debug": "on",
"window": {
"title": "sample",
"name": "main_window",
"width": 500,
"height": 500
},

...

Thanks

[connorholyday]

Hey @alexanderbrown21 yeah I'm just looking for source files that highlight all or most of the language features, so we can see what the syntax highlighting looks like and adjust anything that doesn't feel right :) feel free to open a PR with a screenshot of the file using the theme