feat: add mapix logo assets

src/server/page-template.ts

@@ -7,6 +7,7 @@ export function htmlPage(): string {
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>mapix</title>
+    <link rel="icon" type="image/svg+xml" href="/assets/favicon.svg" />
     <link rel="stylesheet" href="/vendor/leaflet/leaflet.css" />
     <style>
 ${APP_STYLES}