chore: support configure classification

[ecmadao]

resource "bytebase_setting" "classification" {
  name = "bb.workspace.data-classification"

  classification {
    id    = "unique-id"
    title = "Classification Example"

    levels {
      id    = "1"
      title = "Level 1"
    }
    levels {
      id    = "2"
      title = "Level 2"
    }

    classifications {
      id    = "1"
      title = "Basic"
    }
    classifications {
      id    = "1-1"
      title = "User basic info"
      level = "2"
    }
    classifications {
      id    = "1-2"
      title = "User contact info"
      level = "2"
    }
    classifications {
      id    = "2"
      title = "Relationship"
    }
    classifications {
      id    = "2-1"
      title = "Social info"
      level = "2"
    }
  }
}