Add multilingual support with Ukrainian flag and phrases

- Created Ukrainian flag SVG file.
- Developed index.html to include structure for language switching.
- Implemented script.js for managing language phrases and automatic switching.
- Styled the application with style.css for a cohesive design and responsive layout.

flags/english.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 60 30">
+  <clipPath id="t">
+    <path d="M30,15 h30 v15 z v15 h-30 z h-30 v-15 z v-15 h30 z"/>
+  </clipPath>
+  <path d="M0,0 v30 h60 v-30 z" fill="#00247d"/>
+  <path d="M0,0 L60,30 M60,0 L0,30" stroke="#fff" stroke-width="6"/>
+  <path d="M0,0 L60,30 M60,0 L0,30" clip-path="url(#t)" stroke="#cf142b" stroke-width="4"/>
+  <path d="M30,0 v30 M0,15 h60" stroke="#fff" stroke-width="10"/>
+  <path d="M30,0 v30 M0,15 h60" stroke="#cf142b" stroke-width="6"/>
+</svg>