Initial commit: mail-server with WebFlux backend and Angular v22 Synthwave frontend

Co-authored-by: Junie <junie@jetbrains.com>

frontend/src/index.html

@@ -0,0 +1,16 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>MailServer — Synthwave Edition</title>
+  <base href="/">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="icon" type="image/x-icon" href="favicon.ico">
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;800;900&family=Rajdhani:wght@400;500;600;700&family=Fira+Code:wght@400;500;600&display=swap" rel="stylesheet">
+</head>
+<body class="bg-synth-dark">
+  <app-root></app-root>
+</body>
+</html>