Update author controller to return object on post

[FarzamMohammadi]

Description

Author POST API, which originally returned a "Author added successfully created" message has been updated to return the created author object instead.

Fixes # [123]

Type of Change:

• Code

Code/Quality Assurance Only

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Describe the tests you ran to verify your changes. Provide instructions or GIFs so we can reproduce. List any relevant details for your test.

Checklist:

Delete irrelevant options.

• My PR follows the style guidelines of this project
• I have performed a self-review of my own code or materials
• Any dependent changes have been merged

Code/Quality Assurance Only

• My changes generate no new warnings
• Any dependent changes have been published in downstream modules

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[FarzamMohammadi]

Anyone wants to merge this? 😢

[NenadPantelic]

@FarzamMohammadi can you please check these two comments I have left recently? Also, check how the frontend processes this response (I haven't opened it in a while, so I'm not sure whether we have this endpoint covered there 😅 ).

[FarzamMohammadi]

@FarzamMohammadi can you please check these two comments I have left recently? Also, check how the frontend processes this response (I haven't opened it in a while, so I'm not sure whether we have this endpoint covered there 😅 ).

What comments?