[Add/Update] Reorganize the code architecture

[Jzow]

• [x] Separate the current business logic, data access layer, and external interface layer into separate modules
• [ ] Conduct unit tests on some modules
• [x] Manage the dependency jar files of each module in an orderly manner, with the parent class Spring project
• [x] Add a new document description under each module, indicating which business documents are used for

[Jzow]

When verifying the success operation of some tool code classes, Java's static main method should not be used. We need to further test in the test folder to keep test records