Refactor Post class to include dateUpdated field and corresponding me…

[baserrato]

…thods

This pull request introduces several new features and tests to the devopsknowledgeshareapi project. The most important changes include adding new controllers for handling author and info requests, updating the Post class to include a dateUpdated field, and adding corresponding tests for these new features.

New Features:

• InfoController: Added a new controller to handle /info endpoint which returns a welcome message. (src/main/java/com/liatrio/dojo/devopsknowledgeshareapi/InfoController.java)
• AuthorController: Added a new controller to handle /authors endpoint which returns a list of authors. (src/main/java/com/liatrio/dojo/devopsknowledgeshareapi/AuthorController.java)

Updates to Existing Classes:

• Post Class: Added a new field dateUpdated with corresponding getter and setter methods. (src/main/java/com/liatrio/dojo/devopsknowledgeshareapi/Post.java)

New Tests:

• InfoControllerTest: Added functional tests for the InfoController to ensure the /info endpoint works correctly. (src/functionalTest/java/com/liatrio/dojo/devopsknowledgeshareapi/functional/InfoControllerTest.java)
• AuthorControllerTest: Added tests for the AuthorController to verify the /authors endpoint. (src/test/java/com/liatrio/dojo/devopsknowledgeshareapi/AuthorControllerTest.java)
• PostTest: Added tests for the new dateUpdated field in the Post class. (src/test/java/com/liatrio/dojo/devopsknowledgeshareapi/PostTest.java)