Endpoint to list outbound relations for doctypes

As a developer, I have an endpoint to list all the outbound relations of a feature.

The endpoint takes 4 parameters:

• projectId
• branch?
• featureType
• featureId

It returns a payload in the format:

{
  featureType: String,
  featureId: String,
  outbounds: [
     {
        featureType: String,
        featureId: String,
     }, ...
  ]
}

AC

• A generic endpoint is available
• It can be used for doctypes at this stage
• It lists the following outbound relations
  • parent doc
  • lc
  • schemas
  • facets
  • subtypes