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/adaptor/vertexai/registry.go

@@ -0,0 +1,51 @@
+package vertexai
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	claude "github.com/songquanpeng/one-api/relay/adaptor/vertexai/claude"
+	gemini "github.com/songquanpeng/one-api/relay/adaptor/vertexai/gemini"
+	"github.com/songquanpeng/one-api/relay/meta"
+	"github.com/songquanpeng/one-api/relay/model"
+)
+
+type VertexAIModelType int
+
+const (
+	VerterAIClaude VertexAIModelType = iota + 1
+	VerterAIGemini
+)
+
+var modelMapping = map[string]VertexAIModelType{}
+var modelList = []string{}
+
+func init() {
+	modelList = append(modelList, claude.ModelList...)
+	for _, model := range claude.ModelList {
+		modelMapping[model] = VerterAIClaude
+	}
+
+	modelList = append(modelList, gemini.ModelList...)
+	for _, model := range gemini.ModelList {
+		modelMapping[model] = VerterAIGemini
+	}
+}
+
+
+type innerAIAdapter interface {
+	ConvertRequest(c *gin.Context, relayMode int, request *model.GeneralOpenAIRequest) (any, error)
+	DoResponse(c *gin.Context, resp *http.Response, meta *meta.Meta) (usage *model.Usage, err *model.ErrorWithStatusCode)
+}
+
+func GetAdaptor(model string) innerAIAdapter {
+	adaptorType := modelMapping[model]
+	switch adaptorType {
+	case VerterAIClaude:
+		return &claude.Adaptor{}
+	case VerterAIGemini:
+		return &gemini.Adaptor{}
+	default:
+		return nil
+	}
+}