Add IT Support site (Vite + React + TS + Tailwind) with FAQ data from helpdesk DB

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GJy6X45by9tzgQjaHHGMvW

it-support/postcss.config.js

@@ -0,0 +1 @@
+export default { plugins: { tailwindcss: {}, autoprefixer: {} } }