feat: support ollama (close #112)

relay/channel/ollama/relay-ollama.go

@@ -0,0 +1,31 @@
+package ollama
+
+import "one-api/dto"
+
+func requestOpenAI2Ollama(request dto.GeneralOpenAIRequest) *OllamaRequest {
+	messages := make([]dto.Message, 0, len(request.Messages))
+	for _, message := range request.Messages {
+		messages = append(messages, dto.Message{
+			Role:    message.Role,
+			Content: message.Content,
+		})
+	}
+	str, ok := request.Stop.(string)
+	var Stop []string
+	if ok {
+		Stop = []string{str}
+	} else {
+		Stop, _ = request.Stop.([]string)
+	}
+	return &OllamaRequest{
+		Model:    request.Model,
+		Messages: messages,
+		Stream:   request.Stream,
+		Options: &OllamaOptions{
+			Temperature: request.Temperature,
+			Seed:        request.Seed,
+			Topp:        request.TopP,
+			Stop:        Stop,
+		},
+	}
+}