New Webserver and WebApp (#942)

* Replace the WCF webserver with an ASP.NET Core webserver (VocaluxeWeb)

- New project VocaluxeWeb: ASP.NET Core 2.3 (Kestrel) on .NET Framework 4.8.1, HTTP or HTTPS
  with a self-signed certificate, REST API (/api/v1) with Swagger, live events (Server-Sent Events)
- Access to the game only through IVocaluxeRemote; requests run on the main thread once per frame
- Sessions with roles (guest, player, admin) and configurable permissions, PINs hashed with PBKDF2
- Queue as a playlist with requesters and singers, fair order (one song per person and round)
- Admin: settings, server status, logged-in devices, activate/deactivate and delete profiles
- Profile pictures: own photo or one of the Vocaluxe avatars
- Game: WebApp queue screen (song options, playlist group) to start the next song with the chosen
  singers, return to it after singing, warning when the webserver is off, remote keyboard
- Old WCF server, WebserverInitalConfig and URL reservations removed; libraries moved to libs/managed
- Unit tests for PIN hashing, settings and permissions, queue order and device names
- AppVeyor: Visual Studio 2022 image and Node.js 24 (the build compiles the WebApp)
- Documentation in VocaluxeWeb/README.md

* New WebApp (Vue 3, TypeScript, Vite) replacing the old jQuery Mobile website

- Login with profile and PIN, create profiles
- Songs with search, filters, sorting and 30 second previews
- Queue: add songs with game mode, audio and singers, edit, reorder, start in the game
- Playlists: create, edit, add to the queue
- Now playing with live updates, remote control and keyboard
- Players: own profile with picture (photo or Vocaluxe avatar), roles for admins
- Admin settings: permissions, server status, devices, profiles
- Help page, responsive layout for phones, tablets and desktops, light and dark mode
- Texts in WebApp/src/locales/en.json, translated with Transifex
- Old website and PhoneGap config removed

---------

Co-authored-by: Florian Ostertag <flokuep@users.noreply.github.com>

VocaluxeWeb/Services/CUserAgent.cs

@@ -0,0 +1,71 @@
+#region license
+// This file is part of Vocaluxe.
+//
+// Vocaluxe is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Vocaluxe is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Vocaluxe. If not, see <http://www.gnu.org/licenses/>.
+#endregion
+
+using System.Linq;
+
+namespace VocaluxeWeb.Services
+{
+    /// Short, readable device description from a browser's user agent, e.g. "iPhone · Safari".
+    public static class CUserAgent
+    {
+        /// Checked in this order: the first entry whose markers appear in the user agent wins.
+        private static readonly (string Name, string[] Markers)[] _Devices =
+        {
+            ("iPhone", new[] { "iPhone" }),
+            ("iPad", new[] { "iPad" }),
+            ("Android phone", new[] { "Android", "Mobile" }),
+            ("Android tablet", new[] { "Android" }),
+            ("Windows", new[] { "Windows" }),
+            ("Mac", new[] { "Mac OS X" }),
+            ("Linux", new[] { "Linux" })
+        };
+
+        /// Checked in this order, because most browsers also name the engines of others (e.g. Edge contains "Chrome/" and "Safari/").
+        private static readonly (string Name, string[] Markers)[] _Browsers =
+        {
+            ("Edge", new[] { "Edg/" }),
+            ("Firefox", new[] { "Firefox/" }),
+            ("Firefox", new[] { "FxiOS" }),
+            ("Samsung Internet", new[] { "SamsungBrowser" }),
+            ("Chrome", new[] { "Chrome/" }),
+            ("Chrome", new[] { "CriOS" }),
+            ("Safari", new[] { "Safari/" })
+        };
+
+        public static string Describe(string userAgent)
+        {
+            if (string.IsNullOrEmpty(userAgent))
+            {
+                return null;
+            }
+
+            var device = _Find(_Devices, userAgent);
+            var browser = _Find(_Browsers, userAgent);
+            if (device == null && browser == null)
+            {
+                return userAgent.Length > 40 ? userAgent.Substring(0, 40) + "…" : userAgent;
+            }
+
+            return device != null && browser != null ? device + " · " + browser : device ?? browser;
+        }
+
+        private static string _Find((string Name, string[] Markers)[] candidates, string userAgent)
+        {
+            return candidates.Where(c => c.Markers.All(userAgent.Contains)).Select(c => c.Name).FirstOrDefault();
+        }
+    }
+}