Update eslint to 9.x, add ts and prettier

Author: tshemsedinov

.eslintignore

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020-2022 How.Programming.Works contributors
+Copyright (c) 2020-2025 How.Programming.Works contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

.eslintrc.json

@@ -0,0 +1,5 @@
+'use strict';
+
+const init = require('eslint-config-metarhia');
+
+module.exports = init;