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/es-get-iterator/node.js

@@ -0,0 +1,12 @@
+'use strict';
+
+// this should only run in node >= 13.2, so it
+// does not need any of the intense fallbacks that old node/browsers do
+
+var $iterator = Symbol.iterator;
+module.exports = function getIterator(iterable) {
+	// alternatively, `iterable[$iterator]?.()`
+	if (iterable != null && typeof iterable[$iterator] !== 'undefined') {
+		return iterable[$iterator]();
+	}
+};