Support for client_credentials flow in the OAuth process

**Question:**What is your feature/integration request?
Answer: Support for client_credentials flow in the OAuth process.

**Question:**What problem would this feature/integration solve?
Answer: Ability to to connect an API through the client_credentials. Mainly trying to connect to Caspio low code database, which doesn’t support Authorization Code flow.

**Question:**How do you solve/workaround this problem today?
Answer: Created a bearer token using Advanced Rest Client. But that only works for 24 hours. Could push the data into another database and pull the data into Parabola from there, but a bit redundant.