Add custom parameters to the OAuth 2.0 > Client Credential creds

The idea is:

When adding an HTTP Node with an OAuth 2.0 credential with a Client Credentials Grant Type, being able to add custom parameters which will be sent in the body of the authorization request, alongside the grant_type, client_id and client_secret.

My use case:

Sage Intacct APIs (https://developer.sage.com/intacct/docs/1/sage-intacct-rest-api/authorization-and-security/oauth2#client-credentials-grant-type)

I think it would be beneficial to add this because:

It would add flexibility in the node, and allow people to use this credential when calling bizarre APIs with non-standard auth flows.

Any resources to support this?

Already linked above

Are you willing to work on this?

Yes