Configuration adds version attribute support about nacos

[shiyiyue1102]

it may be considered to nacos 3.0, to add a comment while publish config interface

[985492783]

it may be considered to nacos 3.0, to add a comment while publish config interface

i think table<config_info> can use c_desc or add a new json field content to extend all future features

[985492783]

it may be considered to nacos 3.0, to add a comment while publish config interface

i think table<config_info> can use c_desc or add a new json field content to extend all future features

类似naming的元数据，这样服务测也可以根据config的元数据做一些插件化处理例如审计，或者用户想要的版本号等等，不能一直添加字段让表膨胀