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/queue-microtask/index.js

@@ -0,0 +1,9 @@
+/*! queue-microtask. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
+let promise
+
+module.exports = typeof queueMicrotask === 'function'
+  ? queueMicrotask.bind(typeof window !== 'undefined' ? window : global)
+  // reuse resolved promise, and allocate it lazily
+  : cb => (promise || (promise = Promise.resolve()))
+    .then(cb)
+    .catch(err => setTimeout(() => { throw err }, 0))