Add local DynamoDB support and update configuration

[ballPointPenguin]

Add local DynamoDB support and update configuration

Overview

• Normalize the newer configuration vars in server and include sane defaults for local development.
• Enable local dynamodb docker container by default.
• Narrative Report work is now easy and fun with local docker development (provided with api keys)
• Everything should "just work" out of the box for normal development without any 3rd-party keys

Change Summary

[Change summary generated by Github Copilot:]

This pull request introduces several new features and improvements, primarily focusing on integrating DynamoDB, adding support for various generative AI models, and improving logging. Below are the most important changes:

DynamoDB Integration:

• Added a new dynamodb service to docker-compose.yml for local development with DynamoDB.
• Updated example.env and docs/configuration.md to include configurations for DYNAMODB_ENDPOINT. [1] [2]
• Enhanced DynamoStorageService to initialize DynamoDB tables if they do not exist. [1] [2]

Generative AI Model Support:

• Added support for Anthropic, Gemini, and OpenAI API keys in server/src/config.ts and example.env. [1] [2]
• Updated getTopicsFromRID and getModelResponse functions to handle missing API keys and use the new configuration. [1] [2]

Logging Improvements:

• Replaced console.error and console.log statements with logger.error and logger.debug for better logging throughout the codebase. [1] [2] [3]

Configuration Updates:

• Added new environment variables for generative AI models and updated existing ones for AWS configurations in example.env.
• Updated server/src/config.ts to read from the new environment variables and provide default values where necessary.

Code Refactoring:

• Refactored imports and added new utility functions in various files to improve code organization and readability. [1] [2]

These changes collectively enhance the application's functionality, especially in terms of database management, AI model integration, and logging practices.