[Feature] Addition of LLM Chain

[jaintarunAI]

• GenAI Stack version: 0.2.0
• Python version: 3.8+

Hacktoberfest Accepted PR guidelines

• Please check the documentation and CONTRIBUTING.md before you start making changes
• We accept the PR as hacktoberfest-accepted for this issue, if the PR adds the feature of LLM Chain i.e., connecting two LLM model response and make a chain.

[rexdivakar]

Hey @jaintarunAI can you please explain me what sort of functionality are you looking for using the LLM chain models ?

[jaintarunAI]

Hi @rexdivakar

Thank you for showing interest. The functionality for LLM Chain should take multiple input variables, uses the PromptEngine to format them into a prompt. It then passes that to the model.

Reference: https://python.langchain.com/docs/modules/chains/