VS Code User Snippets SCSS: add @ directives.

scss.json

{
	"@import directive": {
		"prefix": "@import",
		"body": [
			"@import "
		],
		"description": "import scss/sass partial"
	},
	"@include directive": {
		"prefix": "@include",
		"body": [
			"@include "
		],
		"description": "include scss/sass mixin"
	},
	"@function directive": {
		"prefix": "@function",
		"body": [
			"@function "
		],
		"description": "declare scss/sass function"
	},
	"@mixin directive": {
		"prefix": "@mixin",
		"body": [
			"@mixin "
		],
		"description": "declare scss/sass mixin"
	}
}