ChromaDB | Update tech_description collection

[kevinrawal]

Currently, we have a collection named tech_description that is used for retrieving context based on user input.

The goal is to store tech stacks along with their real-world problems.
For example:

• With ReactJS, we want to capture concepts such as lazy loading, pagination, prop drilling, in-memory frontend, vulnerabilities, etc.
• With PostgreSQL, we might capture issues related to scaling, indexing, deployment, etc.

Acceptance Criteria

1. Define the structure for tech_description to store information and support context retrieval.
2. Update prompts to clearly differentiate between user-driven question generation and auto-generation.
3. Write new prompts that support tech_description.
4. Add functionality to update, delete, and add tech_description entries in ChromaDB, using an authorized endpoint with admin access.