Initial commit: Aeroflot Flights Web - Angular 12 baseline

- Angular 12 application with PrimeNG components
- 5 existing Cypress e2e test suites
- SCSS styling with BEM naming convention
- i18n support (10 languages)
- Leaflet map integration
- Complete component hierarchy and routing structure

This baseline will be used for Angular → React migration.

ClientApp/node_modules/globalthis/implementation.browser.js

@@ -0,0 +1,11 @@
+/* eslint no-negated-condition: 0, no-new-func: 0 */
+
+'use strict';
+
+if (typeof self !== 'undefined') {
+	module.exports = self;
+} else if (typeof window !== 'undefined') {
+	module.exports = window;
+} else {
+	module.exports = Function('return this')();
+}