Update spring framework boot version to 2.7.9.

Correct text in healthcheck endpoint in Swagger UI.
Prepare image for Swagger UI.

Update response status codes and handling for names and structures.
Update integration tests.

Update schemas and json handling for structures with content more closely suited for operations.
Update api, controller, service, validation, integration tests.

Update schemas and json handling for names with content more closely suited for operations.
Update api, controller, service, validation, integration tests.

Update parameter names to help handle date and username.

Fix issue for create name when approve create system structure. Avoid create name for empty mnemonic.
Refactor integration tests.
Remove duplicate integration tests.

Notifications for names as daily email (create update delete).
Notifications for structures as email after operation (approve cancel reject).

Update approve structures for approve delete and delete sub structures.
Refactor delete structures.
Add integration tests for approve delete.

Update approve structures for approve update and update related names.
Refactor integration tests for approve create.
Add integration tests for approve update.

Refactor approve structures.
Update comments.

Update spring framework boot version to 2.7.7.

Refactor for clarity.
Remove usage of port 8083.

Update springdoc version to 1.6.14.

Mnemonic path is ambiguous if considered in past.
Therefore not show mnemonic path for history of structure.
Show mnemonic path if latest and approved status.

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.