chore: import Musify.StreamingGateway into monorepo (preserving history)

git-subtree-dir: Musify.StreamingGateway
git-subtree-mainline: 28426571e6
git-subtree-split: a8ff05892d

Musify.StreamingGateway/StreamingGateway/Configuration/StreamTicketValidationOptions.cs

@@ -0,0 +1,23 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Musify.StreamingGateway.Configuration;
+
+public sealed class StreamTicketValidationOptions
+{
+    public const string SectionName = "StreamTicket";
+
+    [Required]
+    public required string PublicKeyPath { get; set; }
+
+    [Required]
+    public string Audience { get; set; } = "media-gateway";
+
+    [Required]
+    public string Issuer { get; set; } = "musify-webapi";
+
+    public string QueryParameterName { get; set; } = "t";
+
+    public string HeaderName { get; set; } = "X-Stream-Ticket";
+
+    public string MediaPathPrefix { get; set; } = "/media";
+}