Refactor to reduce complexity and have uniform handling of enums.

Refactor to call validation from controller layer
and allow service layer to focus on business logic.

Fix bug for create name after approve create for system structure-
Name to be created after create approve, not after update approve, delete approve.

Fix bug for is legacy name.
Updates in checks if structure entries are available.

Update unit test for legacy name.

Add image about data and access at top of Swagger UI page.

Update documentation about REST API.

Update spring framework boot version to 2.7.6.

"equals(Object obj)" and "hashCode()" should be overridden in pairs

Field names should comply with a naming convention
Local variable and method parameter names should comply with a naming convention

JUnit5 test classes and methods should have default package visibility
Similar tests should be grouped in a single Parameterized test
"Preconditions" and logging arguments should not require evaluation
Unused assignments should be removed

Set sorting to default to timestamp and ascending.

Update springdoc version to 1.6.13.
Update testcontainers version to 1.17.6.

Update spring framework boot version to 2.7.5.
Update springdoc version to 1.6.12.
Update spotbugs version to 4.7.3.

Update documentation about architecture and code about configuration and database.
Update documentation about REST API for structures and type column.
Update Excel template for structures for type column description.
Add Excel templates with demo data.

Update README.
Update documentation.

Update testcontainers version to 1.17.5.

Update documentation.
Update location of database scripts.
Add docker compose file with database demo content.

About architecture and code.
About REST API.
Use of in-memory database in /src/test/resources/application.properties

About architecture and code.
About REST API.

Purpose to help development and maintenance of Naming backend.
Document will give introduction to architecture and code.

Update testcontainers version to 1.17.4.

Update guava version to 31.1-jre.

Update spring framework boot version to 2.7.4.
Update apache poi version to 5.2.3.
Update spotbugs version to 4.7.2.