Create a service in operator for various hub APIs

Currently we have Tekton Hub config inside our operator. In future we are moving towards artifacthub. As a result the dev console needs to point to a different set of APIs in pipelines builder.
The proposed solution is to build a service within our operator where the user will configure which hub they want to use, this includes -

• Tekton Hub (In cluster and Public Endpoint)
• Artifact Hub (public endpoint for now)

Then the service will accordingly redirect the requests from clients to the configured hub.

The service in future will include in cluster artifact hub and RH tekton catalog.