Bump eslint from 8.57.0 to 9.1.1 in /lambda (#676)

* Bump eslint from 8.57.0 to 9.1.1 in /lambda

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.0 to 9.1.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v8.57.0...v9.1.1)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

* Migrate to eslint flat configuration file

Signed-off-by: jsetton <[email protected]>

---------

Signed-off-by: dependabot[bot] <[email protected]>
Signed-off-by: jsetton <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: jsetton <[email protected]>

lambda/.npmignore

@@ -0,0 +1,3 @@
+eslint.config.js
+coverage/
+test/

lambda/eslint.config.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) 2010-2024 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
+import js from '@eslint/js';
+import pluginMocha from 'eslint-plugin-mocha';
+import pluginNode from 'eslint-plugin-n';
+import pluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+
+export default [
+  js.configs.recommended,
+  pluginMocha.configs.flat.recommended,
+  pluginNode.configs['flat/recommended-script'],
+  pluginPrettierRecommended,
+  {
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'module'
+    },
+    rules: {
+      'no-console': 'warn'
+    }
+  }
+];