Context provider that supplies current date and time information to agents.

This provider can be registered with an agent to automatically include current date/time information in the system prompt.

Example

# Create a provider instance
provider = %Normandy.Components.DateTimeProvider{}

# Register with an agent
agent = BaseAgent.register_context_provider(agent, "datetime", provider)

The provider will add a section to the system prompt like:

## Current Date and Time
2025-10-27 15:30:45.123456Z