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>

appveyor.yml

@@ -1,7 +1,7 @@
 version: '{build}'
 pull_requests:
   do_not_increment_build_number: true
-image: Visual Studio 2019
+image: Visual Studio 2022
 configuration: ReleaseWin
 platform:
 - x64
@@ -35,6 +35,8 @@ install:
         $Env:TAG_NAME_WITH_BRANCH_NAME_FALLBACK = $Env:APPVEYOR_REPO_BRANCH
     }
     choco install "opencover.portable" -y
+    Install-Product node 24 x64
+    node --version
 before_build:
 - ps: |
     $Env:MAIN_REPO = $False
@@ -68,7 +70,7 @@ before_build:
             SonarScanner.MSBuild.exe begin `
                 /k:"Vocaluxe" `
                 /o:"vocaluxe" `
-                /d:sonar.exclusions="Vocaluxe/Website/**/*" `
+                /d:sonar.exclusions="WebApp/**/*" `
                 /d:sonar.host.url="https://sonarcloud.io" `
                 /d:sonar.token="$Env:SonarQubeToken" `
                 /d:"sonar.pullrequest.key=$env:APPVEYOR_PULL_REQUEST_NUMBER" `
@@ -80,7 +82,7 @@ before_build:
             SonarScanner.MSBuild.exe begin `
                 /k:"Vocaluxe" `
                 /o:"vocaluxe" `
-                /d:sonar.exclusions="Vocaluxe/Website/**/*" `
+                /d:sonar.exclusions="WebApp/**/*" `
                 /d:sonar.host.url="https://sonarcloud.io" `
                 /v:"$Env:GIT_VERSION_TAG" `
                 /d:sonar.token="$Env:SonarQubeToken" `