Feature: do not count specific fields when calculating depth

[art1415926535]

Some schema may be created like normal or relay:

normal:

{
  allUsers { id username }
}

relay:

{
  allUsers { edges { node { id username } } }
}

I think, need skip edges and node in depth analysis.

The configuration can be implemented for example like this:

{
    "depth_analysis": {
        "max_depth": 2,  # Maximum depth allowed
        "skip": [EdgeClass, NodeClass],  # Do not count
     }
}