next.config.js has to be different for express/python backends

create-app.ts

templates/index.ts

templates/types.ts

templates/types/simple/nextjs/next.config.app.js

templates/types/simple/nextjs/next.config.static.js

templates/types/streaming/nextjs/next.config.app.js

templates/types/streaming/nextjs/next.config.static.js