Вынести виды файлов Storage в каталог

src/storage-service/Deal.Storage/Options/StorageOptions.cs

@@ -37,6 +37,8 @@ public sealed class StorageOptions
     /// </summary>
     public const string SecureEnvKey = "DEAL_STORAGE_SECURE";
 
+    private const string TrueLiteral = "true";
+
     public string Endpoint { get; init; } = string.Empty;
 
     public string AccessKey { get; init; } = string.Empty;
@@ -69,5 +71,5 @@ public sealed class StorageOptions
     /// </summary>
     public static bool IsEnabled(string? rawValue)
         => string.Equals(rawValue, "1", StringComparison.Ordinal)
-           || string.Equals(rawValue, "true", StringComparison.OrdinalIgnoreCase);
+           || string.Equals(rawValue, TrueLiteral, StringComparison.OrdinalIgnoreCase);
 }