Add ESLint configuration files and VSCode settings for improved code quality and development experience

eslint.config.js

@@ -0,0 +1,28 @@
+export default [
+  {
+    ignores: [
+      'node_modules',
+      'out1',
+      'dist',
+      'build'
+    ]
+  },
+  {
+    files: ['**/*.{js,jsx}'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'module',
+      globals: {
+        browser: true,
+        node: true
+      }
+    },
+    rules: {
+      // baseline rules; extend as needed
+      'no-unused-vars': ['warn', { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
+      'no-undef': 'error',
+      'no-console': 'off'
+    }
+  }
+];
+