Oauth2 with client credentials sent as header

[ivank]

I have checked the following:

• [X] I've searched existing issues and found nothing related to my issue.

Describe the feature you want to add

The Access Management system that we are using (]Gravitee](https://documentation.gravitee.io/am)) similar to Okta requires client credentials to be sent as a Authorization: Basic header rather than parameters. Postman already has a dropdown for that for that

This is a blocker for us for using Bruno unfortunately as we cannot change how access management requires its client credentials.

Mockups or Images of the feature

This could be a similar feature: https://github.com/postmanlabs/postman-app-support/issues/2296#issuecomment-335093383

[pietrygamat]

This has been reported before in #2106

[ivank]

indeed, sorry - closing this as a duplicate of #2106