✨ Removed moderation from database and moderation Cog. Chat history is now set up for per user chat history. Tests passing locally and 66% coverage

[raythurman2386]

Description

This PR implements user-specific chat logs for the Claude AI assistant. It modifies the database structure and operations to store and retrieve chat history on a per-user basis, enhancing the conversational experience by maintaining context for each user individually.

Key changes include:

• Refactored the database operations into a ChatDatabase class
• Updated the Anthropic cog to use user-specific chat logs
• Updated Openai cog to use user-specific chat logs
• Modified the ask_claude utility function to work with user-specific data
• Added a new clear_chat command to allow users to reset their conversation history

Type of change

• [x] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes