feature(#22): this commit introduces the “secret scheme” class for secret management to represent secret information and its expiration dates.

Author: https-richardy

Applications/Backend/Source/HttpsRichardy.Federation.Application/Payloads/Secret/SecretScheme.cs

@@ -0,0 +1,9 @@
+namespace HttpsRichardy.Federation.Application.Payloads.Secret;
+
+public sealed record SecretScheme
+{
+    public string Id { get; set; } = default!;
+    public DateTime CreatedAt { get; set; }
+    public DateTime? ExpiresAt { get; set; }
+    public DateTime? GracePeriodEndsAt { get; set; }
+}