feat: Logo-Bild in ShowEnvelope.cshtml über appsettings konfiguriert

EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml

@@ -1,5 +1,6 @@
 @{
     var nonce = _accessor.HttpContext?.Items["csp-nonce"] as string;
+    var logo = _logoOpt.Value;
 }
 @using DigitalData.Core.DTO;
 @using EnvelopeGenerator.Application.DTOs;
@@ -32,7 +33,7 @@
                 <span class="message navbar-brand">@($"{_localizer[WebKey.Hello]} {Model.Name}, {@envelope?.Message}".TrySanitize(_sanitizer))</span>
             </div>
             <div class="logo">
-                <img class="cursor-img" src="~/img/digital_data.svg" alt="...">
+                <img class="@logo.ShowPageClass" src="@logo.Src" alt="...">
             </div>
         </div>
     </nav>

EnvelopeGenerator.Web/appsettings.json

@@ -130,5 +130,9 @@
       "Name": "City",
       "Platforms": [ "javascript" ]
     }
-  ]
+  ],
+  "Logo": {
+    "Src": "/img/digital_data.svg",
+    "ShowPageClass": "cursor-img"
+  }
 }