instead of having an openai => google translation layer, just add sister functions to the types that construct the google request just like openai's

schema/type.go

@@ -1,17 +1,18 @@
 package schema
 
 import (
-	"github.com/openai/openai-go"
 	"reflect"
 
-	"github.com/sashabaranov/go-openai/jsonschema"
+	"github.com/google/generative-ai-go/genai"
+	"github.com/openai/openai-go"
 )
 
 type Type interface {
-	FunctionParameters() openai.FunctionParameters
+	OpenAIParameters() openai.FunctionParameters
+	GoogleParameters() *genai.Schema
 
-	SchemaType() jsonschema.DataType
-	Definition() jsonschema.Definition
+	//SchemaType() jsonschema.DataType
+	//Definition() jsonschema.Definition
 
 	Required() bool
 	Description() string