CLI: add subcommand access for principals

[MonkeyCanCode]

This is one of the purposed CLI option in #989 (item 1). This new subcommand will display the entities relation a given principal has.

Here is a sample output for quickstart_user based on our example:

{
  "principal": "quickstart_user",
  "principal_roles": [
    {
      "name": "quickstart_user_role",
      "catalog_roles": [
        {
          "name": "quickstart_catalog_role",
          "catalog": "quickstart_catalog",
          "privileges": [
            {
              "type": "catalog",
              "privilege": "CATALOG_MANAGE_CONTENT"
            }
          ]
        }
      ]
    }
  ]
}

Here is another example for the same user but with additional access, principal roles, and catalogs:

{
  "principal": "quickstart_user",
  "principal_roles": [
    {
      "name": "demo_user_role",
      "catalog_roles": [
        {
          "name": "demo_catalog_role",
          "catalog": "demo_catalog",
          "privileges": [
            {
              "type": "catalog",
              "privilege": "CATALOG_MANAGE_CONTENT"
            },
            {
              "type": "namespace",
              "namespace": [
                "default"
              ],
              "privilege": "NAMESPACE_LIST"
            },
            {
              "type": "table",
              "namespace": [
                "default"
              ],
              "tableName": "test",
              "privilege": "TABLE_READ_PROPERTIES"
            },
            {
              "type": "table",
              "namespace": [
                "default"
              ],
              "tableName": "test",
              "privilege": "TABLE_READ_DATA"
            }
          ]
        }
      ]
    },
    {
      "name": "demo_user_empty_role",
      "catalog_roles": []
    },
    {
      "name": "quickstart_user_role",
      "catalog_roles": [
        {
          "name": "quickstart_catalog_role",
          "catalog": "quickstart_catalog",
          "privileges": [
            {
              "type": "catalog",
              "privilege": "CATALOG_MANAGE_CONTENT"
            }
          ]
        }
      ]
    }
  ]
}

Here is an sample output for a user with zero reference:

{
  "principal": "test",
  "principal_roles": []
}

[eric-maynard]

I wonder how frequently duplicates will appear, and whether we could try to remove them