feat: v2 to v3 data conversion (#1164)

* fix: user update group notification, group member face url

* fix: user update group notification, group member face url

* feat: v2 to v3 data conversion

* feat: v2 to v3 data conversion

tools/data-conversion/chat/v3/admin/admin.go

@@ -0,0 +1,34 @@
+// Copyright © 2023 OpenIM open source community. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package admin
+
+import (
+	"time"
+)
+
+// Admin 后台管理员.
+type Admin struct {
+	Account    string    `gorm:"column:account;primary_key;type:varchar(64)"`
+	Password   string    `gorm:"column:password;type:varchar(64)"`
+	FaceURL    string    `gorm:"column:face_url;type:varchar(255)"`
+	Nickname   string    `gorm:"column:nickname;type:varchar(64)"`
+	UserID     string    `gorm:"column:user_id;type:varchar(64)"` // openIM userID
+	Level      int32     `gorm:"column:level;default:1"  `
+	CreateTime time.Time `gorm:"column:create_time"`
+}
+
+func (Admin) TableName() string {
+	return "admins"
+}