[Feature Request] Generate credential node from OpenAPI spec

[devlikepro]

Right now we only work with nodes/actions, but OpenAPI also have many info about authentication, so likely we can create credential node from it as well

You need to create it manually
Here's chatwoot example
https://github.com/devlikeapro/n8n-nodes-chatwoot/blob/main/credentials/ChatWootApi.credentials.ts