chore: update dependency eslint to v9

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Signed-off-by: Rifa Achrinza <25147899+achrinza@users.noreply.github.com>

Author: achrinza

.editorconfig

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: FSFAP
+# SPDX-FileCopyrightText: Copyright (c) 2024 Rifa Achrinza
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2
+max_line_length = 80

.eslintignore

@@ -15,4 +15,9 @@ checkstyle.xml
 loopback-connector-*.tgz
 .nyc_output
 coverage
-.vscode
+.vscode
+
+# Code editors
+\#*#
+*~
+.#*

.eslintrc

@@ -0,0 +1,23 @@
+// SPDX-FileCopyrightText: Copyright LoopBack contributors 2024.
+// SPDX-License-Identifier: MIT
+'use strict';
+const FlatCompat = require('@eslint/eslintrc').FlatCompat;
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+});
+
+module.exports = [
+  ...compat.extends('loopback'),
+  {
+    languageOptions: {
+      sourceType: 'commonjs',
+    },
+    rules: {
+      'max-len': ['error', 90, 4, {
+        ignoreComments: true,
+        ignoreUrls: true,
+        ignorePattern: '^\\s*var\\s.+=\\s*(require\\s*\\()|(/)',
+      }],
+    },
+  },
+];