Add ruleset for JSON and markdown

Author: oeninghe-dataport

configs/json.js

@@ -0,0 +1,21 @@
+import json from '@eslint/json'
+import dataportGeodev from '../rules/index.js'
+
+export default [
+	{
+		plugins: {
+			json,
+		},
+		language: 'json/json',
+		...json.configs.recommended,
+	},
+	{
+		plugins: {
+			'dataport-geodev': dataportGeodev,
+		},
+		rules: {
+			'json/top-level-interop': 'error',
+			'dataport-geodev/json-indent': 'error',
+		},
+	},
+]

configs/markdown.js

@@ -0,0 +1,16 @@
+import markdown from '@eslint/markdown'
+
+export default [
+	{
+		plugins: {
+			markdown,
+		},
+		language: 'json/json',
+	},
+	...markdown.configs.recommended,
+	{
+		rules: {
+			'markdown/no-missing-label-refs': 'off',
+		},
+	},
+]