feat: init db demo

[DVKunion]

• refactor(client): complete new b/s construct #25 初步完成 B/S 改造
• feat(client): client api support #32 基本完成 api 框架信息
• feat(client): client support auto deploy #34 完成阿里云、sealos sdk对接实现的一件部署
• feat(client): support limit calc #36 初步完成流量统计
• feat: login pages #38 登录页
• feat: network proxy pages #40 代理服务页
• feat: settings config pages #42 系统配置页

[edxuanlen]

I don't think you can use sqlite to implement the query API first. You should abstract a middle layer to expand other possible database choices.

[DVKunion]

I don't think you can use sqlite to implement the query API first. You should abstract a middle layer to expand other possible database choices.

maybe declare a database.go ?