refactor: use adaptor to do relay & test

relay/channel/palm/model.go

@@ -0,0 +1,40 @@
+package palm
+
+import (
+	"github.com/songquanpeng/one-api/relay/model"
+)
+
+type ChatMessage struct {
+	Author  string `json:"author"`
+	Content string `json:"content"`
+}
+
+type Filter struct {
+	Reason  string `json:"reason"`
+	Message string `json:"message"`
+}
+
+type Prompt struct {
+	Messages []ChatMessage `json:"messages"`
+}
+
+type ChatRequest struct {
+	Prompt         Prompt  `json:"prompt"`
+	Temperature    float64 `json:"temperature,omitempty"`
+	CandidateCount int     `json:"candidateCount,omitempty"`
+	TopP           float64 `json:"topP,omitempty"`
+	TopK           int     `json:"topK,omitempty"`
+}
+
+type Error struct {
+	Code    int    `json:"code"`
+	Message string `json:"message"`
+	Status  string `json:"status"`
+}
+
+type ChatResponse struct {
+	Candidates []ChatMessage   `json:"candidates"`
+	Messages   []model.Message `json:"messages"`
+	Filters    []Filter        `json:"filters"`
+	Error      Error           `json:"error"`
+}