lightweight variant (#1)

Reviewed-on: #1
Co-authored-by: Aleksandr Neychev <alexnejchev73@gmail.com>

CursorLang.Core/Services/IReleaseFeed.cs

@@ -0,0 +1,21 @@
+using CursorLang.Core.Models;
+
+namespace CursorLang.Core.Services;
+
+/// <summary>
+/// The release list of the repository.
+/// </summary>
+public interface IReleaseFeed
+{
+    /// <summary>
+    /// Returns the newest release carrying an MSIX package, or <c>null</c>
+    /// when there is no suitable release.
+    /// </summary>
+    Task<ReleaseInfo?> GetLatestAsync(CancellationToken cancellationToken);
+
+    /// <summary>
+    /// Adds to the request whatever a private repository needs. The package is
+    /// downloaded not by the list itself, but access to it is closed just the same.
+    /// </summary>
+    void Authorize(HttpRequestMessage request);
+}