initial commit

DigitalData.Core.Contracts/CleanArchitecture/Application/IServiceMessage.cs

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+namespace DigitalData.Core.Contracts.CleanArchitecture.Application
+{
+    /// <summary>
+    /// Defines a basic structure for service messages, including a success flag and a collection of messages.
+    /// This interface is intended to be a base for more specific service result types, offering a way to communicate
+    /// operation outcomes (success or failure) along with relevant messages.
+    /// </summary>
+    public interface IServiceMessage
+    {
+        /// <summary>
+        /// Gets or sets a value indicating whether the service operation was successful.
+        /// </summary>
+        bool IsSuccess { get; set; }
+
+        /// <summary>
+        /// Gets or sets a collection of messages associated with the service operation. These messages can be error descriptions,
+        /// success notifications, or other relevant information related to the operation's outcome.
+        /// </summary>
+        List<string> Messages { get; set; }
+    }
+}