feat: support email domain whitelist (#337)

* feat: support email domain restriction

* fix(SMTPToken): disable password auto complete

* chore: update implementation

---------

Co-authored-by: JustSong <songquanpeng@foxmail.com>

controller/option.go

@@ -2,11 +2,12 @@ package controller
 
 import (
 	"encoding/json"
-	"github.com/gin-gonic/gin"
 	"net/http"
 	"one-api/common"
 	"one-api/model"
 	"strings"
+
+	"github.com/gin-gonic/gin"
 )
 
 func GetOptions(c *gin.Context) {
@@ -49,6 +50,14 @@ func UpdateOption(c *gin.Context) {
 			})
 			return
 		}
+	case "EmailDomainRestrictionEnabled":
+		if option.Value == "true" && len(common.EmailDomainWhitelist) == 0 {
+			c.JSON(http.StatusOK, gin.H{
+				"success": false,
+				"message": "无法启用邮箱域名限制，请先填入限制的邮箱域名！",
+			})
+			return
+		}
 	case "WeChatAuthEnabled":
 		if option.Value == "true" && common.WeChatServerAddress == "" {
 			c.JSON(http.StatusOK, gin.H{