Enhances Agents module with AI Copilot and more

[sfmskywalker]

This pull request enhances the Agents module by:

• Introducing an AI Copilot component to the app bar, providing workflow generation and assistance.
• Adding the ability to generate workflows using AI prompts, incorporating email integration, and refining agent communication.
• Implementing a document query plugin and OpenAI embedding generator to enrich engine configuration.
• Updating workflows with customer communication capabilities and email skills.
• Refactoring code for better clarity and organization.