Next.js Frontend Template

### 🚀 The feature, motivation and pitch

Seeing we experienced varying levels of difficulty in linking the node.js to a frontend, I came up with one along the way. It's a fully functional Next.Js app built over the langchain chatbot example and promises to be a good place for devs to start. I will be putting finishing touches to it once approved.

Take a look here https://github.com/emiridbest/agentkit/tree/master/typescript/examples/langchain-nextjs-chatbot

### Alternatives

_No response_

### Additional context

_No response_