publish some needed interfaces

Author: fumito-ito

Sources/AnthropicSwiftSDK/Entity/Content.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 /// Type of content block.
-enum ContentType: String {
+public enum ContentType: String {
     /// single string
     case text
     /// image content
@@ -33,7 +33,7 @@ public enum Content {
     case toolResult(ToolResultContent)
 
     /// The type of content block.
-    var contentType: ContentType {
+    public var contentType: ContentType {
         switch self {
         case .text:
             return ContentType.text

Sources/AnthropicSwiftSDK/Entity/ToolResultContent.swift

@@ -16,6 +16,12 @@ public struct ToolResultContent {
     public let content: [Content]
     /// Set to `true` if the tool execution resulted in an error.
     public let isError: Bool?
+
+    public init(toolUseId: String, content: [Content], isError: Bool?) {
+        self.toolUseId = toolUseId
+        self.content = content
+        self.isError = isError
+    }
 }
 
 extension ToolResultContent: Encodable {}

Sources/AnthropicSwiftSDK/Network/Extension/StreamingResponse+Extension.swift

@@ -7,7 +7,7 @@
 
 extension StreamingResponse {
     /// True if `stop_reason` of this StreamingResponse is `tool_use`
-    var isToolUse: Bool {
+    public var isToolUse: Bool {
         switch self {
         case let deltaResponse as StreamingMessageDeltaResponse:
             return deltaResponse.isToolUse