Add toolbox features for function removal and callback execution

Introduced `WithFunctionRemoved` and `ExecuteCallbacks` methods to enhance `ToolBox` functionality. This allows dynamic function removal and execution of custom callbacks during tool call processing. Also cleaned up logging and improved handling for required tools in `openai.go`.

openai.go

@@ -3,7 +3,6 @@ package go_llm
 import (
 	"context"
 	"fmt"
-	"log/slog"
 	"strings"
 
 	oai "github.com/sashabaranov/go-openai"
@@ -40,8 +39,10 @@ func (o openaiImpl) newRequestToOpenAIRequest(request Request) oai.ChatCompletio
 					Parameters:  tool.Parameters.Definition(),
 				},
 			})
+		}
 
-			fmt.Println("tool:", tool.Name, tool.Description, tool.Strict, tool.Parameters.Definition())
+		if !request.Toolbox.dontRequireTool {
+			res.ToolChoice = "required"
 		}
 	}
 
@@ -72,7 +73,6 @@ func (o openaiImpl) responseToLLMResponse(response oai.ChatCompletionResponse) R
 	for _, choice := range response.Choices {
 		var toolCalls []ToolCall
 		for _, call := range choice.Message.ToolCalls {
-			fmt.Println("responseToLLMResponse: call:", call.Function.Arguments)
 			toolCall := ToolCall{
 				ID: call.ID,
 				FunctionCall: FunctionCall{
@@ -81,8 +81,6 @@ func (o openaiImpl) responseToLLMResponse(response oai.ChatCompletionResponse) R
 				},
 			}
 
-			fmt.Println("toolCall.FunctionCall.Arguments:", toolCall.FunctionCall.Arguments)
-
 			toolCalls = append(toolCalls, toolCall)
 
 		}
@@ -103,11 +101,8 @@ func (o openaiImpl) ChatComplete(ctx context.Context, request Request) (Response
 
 	req := o.newRequestToOpenAIRequest(request)
 
-	slog.Info("openaiImpl.ChatComplete", "req", fmt.Sprintf("%#v", req))
 	resp, err := cl.CreateChatCompletion(ctx, req)
 
-	fmt.Println("resp:", fmt.Sprintf("%#v", resp))
-
 	if err != nil {
 		return Response{}, fmt.Errorf("unhandled openaiImpl error: %w", err)
 	}