chore: use @grapp/nextra-theme package

Author: mobily

docs/.eslintrc.js

@@ -1,22 +1 @@
-module.exports = {
-  parser: '@typescript-eslint/parser',
-  parserOptions: {
-    sourceType: 'module',
-  },
-  plugins: ['@typescript-eslint', 'import', 'react'],
-  extends: ['plugin:react/recommended'],
-  settings: {
-    react: {
-      version: 'detect',
-    },
-  },
-  rules: {
-    'import/extensions': ['error', 'never'],
-    'no-shadow': 'off',
-    '@typescript-eslint/no-shadow': 'warn',
-    'linebreak-style': 'error',
-    'react/display-name': 'off',
-    'react/prop-types': 'off',
-    'react/react-in-jsx-scope': 'off',
-  },
-}
+module.exports = require('@grapp/eslint-config/default')

docs/.prettierrc.js

@@ -1,9 +1 @@
-module.exports = {
-  parser: 'typescript',
-  semi: false,
-  singleQuote: true,
-  trailingComma: 'all',
-  printWidth: 100,
-  arrowParens: 'avoid',
-  endOfLine: 'auto',
-}
+module.exports = require('@grapp/prettier-config')