Adds ability for connectors to list their capabilities

[mstanbCO]

Adds the ability for connectors to list their own capabilities from the command line.
baton-crowdstrike capabilities

{
  "resourceTypeCapabilities": [
    {
      "resourceType":{
        "id":"user", 
        "displayName":"User", 
        "traits":["TRAIT_USER"], 
        "annotations":[
          {"@type":"type.googleapis.com/c1.connector.v2.SkipEntitlementsAndGrants"}
        ]
      }, 
      "capabilities":["CAPABILITY_SYNC"]
  }, 
  {
    "resourceType":{
      "id":"role", 
      "displayName":"Role", 
      "traits":["TRAIT_ROLE"]}, 
      "capabilities":["CAPABILITY_SYNC", "CAPABILITY_PROVISION"]
    }
  ]
}