feat: add content-generation features

[tope-olajide]

Title:

Add Backend Features for Content Generation

Description:

This PR introduces backend functionalities to support content generation. The key features include:

• Generate Content Instructions: Logic to create detailed instructions for content generation.
• Serverless Function: Implementation of a serverless function to handle content generation efficiently.

Changes Made:

• Added a function to generate content instructions.
• Set up a serverless function to process content requests.