feat: add models for streaming messages

src/AnthropicClient/Models/ChatResponse.cs

@@ -10,42 +10,42 @@ public class ChatResponse
   /// <summary>
   /// Gets the ID of the chat response.
   /// </summary>
-  public string Id { get; set; } = string.Empty;
+  public string Id { get; init; } = string.Empty;
 
   /// <summary>
   /// Gets the model used for the chat response.
   /// </summary>
-  public string Model { get; set; } = string.Empty;
+  public string Model { get; init; } = string.Empty;
 
   /// <summary>
   /// Gets the role of the chat response.
   /// </summary>
-  public string Role { get; set; } = string.Empty;
+  public string Role { get; init; } = string.Empty;
 
   /// <summary>
   /// Gets the stop reason of the chat response.
   /// </summary>
   [JsonPropertyName("stop_reason")]
-  public string StopReason { get; set; } = string.Empty;
+  public string StopReason { get; init; } = string.Empty;
 
   /// <summary>
   /// Gets the stop sequence of the chat response.
   /// </summary>
   [JsonPropertyName("stop_sequence")]
-  public string StopSequence { get; set; } = string.Empty;
+  public string StopSequence { get; init; } = string.Empty;
 
   /// <summary>
   /// Gets the type of the chat response.
   /// </summary>
-  public string Type { get; set; } = string.Empty;
+  public string Type { get; init; } = string.Empty;
 
   /// <summary>
   /// Gets the usage of the chat response.
   /// </summary>
-  public ChatUsage Usage { get; set; } = new();
+  public ChatUsage Usage { get; init; } = new();
 
   /// <summary>
   /// Gets the contents of the chat response.
   /// </summary>
-  public List<Content> Content { get; set; } = [];
+  public List<Content> Content { get; init; } = [];
 }