[REVER-51] Workable Integration #551

To goal of this issue is to support Workable as an integration within Revert APIs.

Workable documentation: https://workable.readme.io/reference/generate-an-access-token

Next steps:

• Familiarise yourself with the Workable APIs

• Understand how we store OAuth credentials within Revert and make changes such that we can allow our users to be able to make a connection with a Workable account

As us any questions you might have on our discord.