Setup openrouter and github copilot backend

[aquaticcalf]

the backend is the thing that interacts with your LLM, frontend ( nala cli ) talks with backend

this will help with retaining chat when network failure

this would also help with multi device communication -> phone to laptop/pc or one laptop/pc to another

for this to work, there needs to be a proper authentication system and transparency system on all the requests that have been semt through your account

[aquaticcalf]

openrouter integration is straightforward
openapi style api

but for github copilot, we might need to setup ngrok or localtunnel inorder to use that for dev..

as github copilot extensions only work with a server open to public internet

[aquaticcalf]

i guess this is where using something like sst makes sense