Update eslint config to 9.x

Author: tshemsedinov

.eslintignore

@@ -0,0 +1,7 @@
+'use strict';
+
+const init = require('eslint-config-metarhia');
+
+init[0].rules['class-methods-use-this'] = 'off';
+
+module.exports = init;

.eslintrc.json

@@ -0,0 +1,10 @@
+'use strict';
+
+module.exports = {
+  printWidth: 80,
+  singleQuote: true,
+  trailingComma: 'all',
+  tabWidth: 2,
+  useTabs: false,
+  semi: true,
+};