Refactor code structure for improved readability and maintainability

src/Scanner/StellaOps.Scanner.WebService/Contracts/BunContracts.cs

@@ -0,0 +1,21 @@
+using System.Text.Json.Serialization;
+using StellaOps.Scanner.Core.Contracts;
+
+namespace StellaOps.Scanner.WebService.Contracts;
+
+public sealed record BunPackagesResponse
+{
+    [JsonPropertyName("scanId")]
+    public string ScanId { get; init; } = string.Empty;
+
+    [JsonPropertyName("imageDigest")]
+    public string ImageDigest { get; init; } = string.Empty;
+
+    [JsonPropertyName("generatedAt")]
+    public DateTimeOffset GeneratedAt { get; init; }
+        = DateTimeOffset.UtcNow;
+
+    [JsonPropertyName("packages")]
+    public IReadOnlyList<BunPackageArtifact> Packages { get; init; }
+        = Array.Empty<BunPackageArtifact>();
+}