[FEATURE] Custom OAuth

It would be great to have a custom Oauth connector

No real app in particular but just a custom Oatuh connector like Poastman that manages getting the token and refresh token for the workflow

I guess you can build a workflow to manage this and store it somewhere*

It would really just manage the tokens and refresh the token and then I can use that token to make the requests to the API.

If you already have that please let me know, I am working with some smaller services and startups that would be handy to have this to easily manage tokens securely in workflows.