feat: support claude and gemini in vertex ai (#1621)

* feat: support claude and gemini in vertex ai

* fix: do not show api key field in channel page when the type is VertexAI

* fix: update getToken function to include channelId in cache key

relay/channeltype/define.go

@@ -43,5 +43,6 @@ const (
 	TogetherAI
 	Doubao
 	Novita
+	VertextAI
 	Dummy
 )

relay/channeltype/helper.go

@@ -35,6 +35,8 @@ func ToAPIType(channelType int) int {
 		apiType = apitype.Cloudflare
 	case DeepL:
 		apiType = apitype.DeepL
+	case VertextAI:
+		apiType = apitype.VertexAI
 	}
 
 	return apiType

relay/channeltype/url.go

@@ -43,6 +43,7 @@ var ChannelBaseURLs = []string{
 	"https://api.together.xyz",                  // 39
 	"https://ark.cn-beijing.volces.com",         // 40
 	"https://api.novita.ai/v3/openai",           // 41
+	"",										     // 42
 }
 
 func init() {