Allow Ollama certificate to use custom headers to access it, if the service has access control

The idea is:

Using local llms through Ollama is very useful and have a lot of potential, the problem is when the ollama instance is exposed in the web, it needs to have an access control, when access control is added, n8n ollama certificate doesn’t have a way to add any custom headers, so the instance becomes unaccessible. The idea is enable Ollama certificate to add custom headers, so Ollama instance exposed and protected by for example a service token from Cloudflare is reachable