[@portaljs/ckan][xl] - add ckan package and example using it

packages/ckan/.eslintrc.cjs

@@ -0,0 +1,16 @@
+module.exports = {
+  env: {
+    browser: true,
+    es2020: true
+  },
+  extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended', 'plugin:react-hooks/recommended', 'plugin:storybook/recommended'],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaVersion: 'latest',
+    sourceType: 'module'
+  },
+  plugins: ['react-refresh'],
+  rules: {
+    'react-refresh/only-export-components': 'warn'
+  }
+};