[FEAT] [Anchor: FE Java] Implement Create Endpoint for Blog Categories

[Beulah94]

Description

Endpoint to create blog categories. This enhancement will provide a way to programmatically manage and add new blog categories.

Acceptance Criteria

Endpoint Creation: A new POST endpoint should be created for blog categories.
Category Creation: The POST endpoint should successfully create a new blog category based on the provided input.
Validation: The endpoint should validate the input to ensure that the category name or description is valid.
Security: Appropriate security measures should be implemented to protect the blog category data.
Error Handling: The endpoint should handle potential errors and provide informative error messages.

Purpose

To enable programmatic management of blog categories, allowing for easier creation and maintenance.

Requirem#ents

A POST endpoint should be created for blog categories, accepting the category name or description as input.

Expected Outcome

The POST endpoint should successfully create a new blog category based on the provided input.