Add linter

.eslintrc.json

@@ -0,0 +1,29 @@
+{
+	"globals": {},
+	"env": {
+		"commonjs": true,
+		"es2021": true,
+		"node": true
+	},
+	"parser": "@typescript-eslint/parser",
+	"plugins": [
+		"@typescript-eslint"
+	],
+	"extends": [
+		"eslint:recommended",
+		"plugin:@typescript-eslint/recommended",
+		"@matt-fidd"
+	],
+	"parserOptions": {
+		"ecmaVersion": "latest"
+	},
+	"rules": {
+		"max-len": "off",
+		"sort-imports": [
+			"error",
+			{
+				"allowSeparatedGroups": true
+			}
+		]
+	}
+}