Add user account deletion handling and event publishing for cleanup

[devondragon]

This pull request introduces a new feature for handling user account deletion and profile cleanup, along with some refactoring and improvements in the codebase. The most important changes include the addition of a new event for pre-deletion operations, updates to the user service to handle account deletion or disabling, and documentation updates to reflect these changes.

New feature for user account deletion and profile cleanup:

• README.md: Added a new section on handling user account deletion and profile cleanup, including enabling actual deletion and cleaning up related data. [1] [2]

Code refactoring and improvements:

• src/main/java/com/digitalsanctuary/spring/user/api/UserAPI.java: Refactored the deleteAccount method to use the new deleteOrDisableUser method from the user service. [1] [2]
• src/main/java/com/digitalsanctuary/spring/user/event/UserPreDeleteEvent.java: Added a new event class UserPreDeleteEvent to handle pre-deletion logic.
• src/main/java/com/digitalsanctuary/spring/user/service/UserService.java: Updated the user service to include the deleteOrDisableUser method, which handles both deletion and disabling of user accounts, and publishes the UserPreDeleteEvent. [1] [2] [3] [4] [5] [6] [7]

Minor updates:

• src/main/java/com/digitalsanctuary/spring/user/profile/BaseUserProfile.java: Added a foreign key constraint to the user_id column in BaseUserProfile. [1] [2] [3]

[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (2)

src/main/java/com/digitalsanctuary/spring/user/service/UserService.java:196

• Ensure that the eventPublisher is properly injected (e.g., via constructor injection) to avoid potential null pointer issues during event publishing.

private final ApplicationEventPublisher eventPublisher;

src/main/java/com/digitalsanctuary/spring/user/service/UserService.java:261

• Please add test cases to cover both scenarios in deleteOrDisableUser method: when actuallyDeleteAccount is true (deletion path) and when it is false (disabling path).

public void deleteOrDisableUser(final User user) {