Add knowledgebase to agent

[dev-orion-ps]

The agent should be able to answer from the document.

[Animeshkr9044]

I have worked on this knowledge base feature in calling . Will clone and see if I could complete this feature

[marmikcfc]

Hey @Animeshkr9044, sure. We're working on refactoring task manager. Feel free to ping us understanding any part of the code.