[SW]: Enable multi user authentication for Functional API calls in Worflow definitions

Currently the Serverless Workflows Implementation only supports Basic Auth and only supports Basic Auth for 1 user, passed in through the Application.properties for performing secured OpenAPI operations.

This means that multiple users are not able to use their own credentials to run the Orchestrations and either have to:
1. Use shared creds or
2. Run their own instances of the Orchestration services.

Desired Behaviour:

• Multiple users can call the Orchestrations with their own credentials to enact any Secured Function calls (OpenAPI)