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/varint/encode.js

@@ -0,0 +1,30 @@
+module.exports = encode
+
+var MSB = 0x80
+  , REST = 0x7F
+  , MSBALL = ~REST
+  , INT = Math.pow(2, 31)
+
+function encode(num, out, offset) {
+  if (Number.MAX_SAFE_INTEGER && num > Number.MAX_SAFE_INTEGER) {
+    encode.bytes = 0
+    throw new RangeError('Could not encode varint')
+  }
+  out = out || []
+  offset = offset || 0
+  var oldOffset = offset
+
+  while(num >= INT) {
+    out[offset++] = (num & 0xFF) | MSB
+    num /= 128
+  }
+  while(num & MSBALL) {
+    out[offset++] = (num & 0xFF) | MSB
+    num >>>= 7
+  }
+  out[offset] = num | 0
+  
+  encode.bytes = offset - oldOffset + 1
+  
+  return out
+}