fix(schema): make Role transparent

[mversic]

Description

• make Role transparent in schema
• rename NewXXX to XXX when serializing as json

This is how schema looked like:

"NewRole": {
  "Struct": [
    {
      "name": "inner",
      "type": "Role"
    }
  ]
},

but in genesis it was:

{
  "Register": {
    "Role": {
      "id": "ALICE_METADATA_ACCESS",
      "permissions": [
        {
          "name": "CanRemoveKeyValueInAccount",
          "payload": {
            "account": "ed0120CE7FA46C9DCE7EA4B125E2E36BDB63EA33073E7590AC92816AE1E861B7048B03@wonderland"
          }
        },
        {
          "name": "CanSetKeyValueInAccount",
          "payload": {
            "account": "ed0120CE7FA46C9DCE7EA4B125E2E36BDB63EA33073E7590AC92816AE1E861B7048B03@wonderland"
          }
        }
      ]
    }
  }
},

which is the consequence of the fact that we have no way of representing transparency in schema

Linked issue

Related to #1660

Benefits

Checklist

• I've read CONTRIBUTING.md
• I've used the standard signed-off commit format (or will squash just before merging)
• All applicable CI checks pass (or I promised to make them pass later)
• (optional) I've written unit tests for the code changes
• I replied to all comments after code review, marking all implemented changes with thumbs up