修复pgsql和数据库导入bug，增加默认mod中的datatypes (#1712)

* 多文件: fix error specified more than once in PG

* Update sys_authority.go

* Update sys_authority.go

* sys_export_template.go: 导入Excel时使用批量插入提高性能

* 添加gorm.io/datatypes

---------

Co-authored-by: crazyrunsnail <fjyuan1991@163.com>
Co-authored-by: XiMo-210 <2831802697@qq.com>

server/go.mod

@@ -134,6 +134,7 @@ require (
 	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
+	gorm.io/datatypes v1.2.0 // indirect
 	gorm.io/plugin/dbresolver v1.4.1 // indirect
 	modernc.org/libc v1.24.1 // indirect
 	modernc.org/mathutil v1.5.0 // indirect