initial commit of untested function stuff

llm.go

@@ -27,7 +27,7 @@ type Message struct {
 
 type Request struct {
 	Messages    []Message
-	Toolbox     []Function
+	Toolbox     *ToolBox
 	Temperature *float32
 }
 
@@ -50,6 +50,7 @@ type Response struct {
 
 type ChatCompletion interface {
 	ChatComplete(ctx context.Context, req Request) (Response, error)
+	SplitLongString(ctx context.Context, input string) ([]string, error)
 }
 
 type LLM interface {
@@ -57,7 +58,7 @@ type LLM interface {
 }
 
 func OpenAI(key string) LLM {
-	return openai{key: key}
+	return openaiImpl{key: key}
 }
 
 func Anthropic(key string) LLM {