chore: adding eslint and prettier config

eslint.config.mjs

@@ -0,0 +1,53 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import pluginReact from 'eslint-plugin-react'
+import json from '@eslint/json'
+import css from '@eslint/css'
+import { defineConfig, globalIgnores } from 'eslint/config'
+import reactCompiler from 'eslint-plugin-react-compiler'
+import eslintConfigPrettier from 'eslint-config-prettier/flat'
+
+export default defineConfig([
+  globalIgnores(['**/build', '**/package.json', '**/package-lock.json']),
+  {
+    files: ['**/*.{js,mjs,cjs,jsx}'],
+    plugins: { js },
+    extends: ['js/recommended']
+  },
+  {
+    files: ['packages/admin-ui/**/*.{js,mjs,jsx}'],
+    languageOptions: { sourceType: 'module', globals: globals.browser }
+  },
+  {
+    files: ['packages/server/**/*.{js,cjs}'],
+    languageOptions: { sourceType: 'commonjs', globals: globals.node }
+  },
+  {
+    ...pluginReact.configs.flat.recommended,
+    settings: { react: { version: 'detect' } },
+    files: ['packages/admin-ui/**/*.{jsx,js}']
+  },
+  { ...reactCompiler.configs.recommended },
+  eslintConfigPrettier,
+  {
+    files: ['**/*.json'],
+    plugins: { json },
+    language: 'json/json',
+    extends: ['json/recommended']
+  },
+  {
+    files: ['**/*.css'],
+    plugins: { css },
+    language: 'css/css',
+    extends: ['css/recommended']
+  },
+  {
+    rules: {
+      // 'no-unused-vars': 'on',
+      'react/prop-types': 'off',
+      'react/display-name': 'off',
+      'react/no-unescaped-entities': 'off',
+      'react-compiler/react-compiler': 'warn'
+    }
+  }
+])