feat(HomeController): Endpunkt für Stammverzeichnis als Startseite hinzugefügt.

EnvelopeGenerator.Web/Views/Home/Main.cshtml

@@ -0,0 +1,28 @@
+@{
+    var nonce = _accessor.HttpContext?.Items["csp-nonce"] as string;
+    var logo = _logoOpt.Value;
+    ViewData["Title"] = _localizer["Home"];
+    var userCulture = ViewData["UserCulture"] as Culture;
+}
+<div class="page container py-4 px-4">
+    <header class="text-center">
+        <div class="header-1 alert alert-secondary" role="alert">
+            <h3 class="text">@_localizer[WebKey.WelcomeToTheESignPortal]</h3>
+            <img class="@logo.LockedPageClass" src="@logo.Src" />
+        </div>
+        <div class="icon locked mt-4 mb-1">
+            <svg xmlns="http://www.w3.org/2000/svg" width="72" height="72" fill="currentColor" class="bi bi-shield-lock" viewBox="0 0 16 16">
+            </svg>
+        </div>
+        <h1>@_localizer["Title"]</h1>
+    </header>
+    <section class="text-center">
+        <p>@_localizer["Explanation"]</p>
+    </section>
+    @if (ViewData["ErrorMessage"] is string errMsg)
+    {
+    <div id="access-code-error-message" class="alert alert-danger row" role="alert">
+            @_sanitizer.Sanitize(errMsg)
+    </div>
+    }
+</div>