Option to create subaccout API token with the logzio_subaccount resource

[michelmorin]

To add option to create a subaccount API token and have it available as an output when creating a sub account so we can reference later in other terraform apply as provider api token to make terraform changes on sub account such as the logzio_archive_logs on sub Acount

This property should also have the option to give the API token a name.

Currently we do this by calling curl to the Logzio API directly
resource "shell_script" "create_subaccount_api" {
depends_on = [
logzio_subaccount.subaccount
]

lifecycle_commands {
create = <<SCRIPT
curl -X POST "${var.logzio_api_uri}/v1/api-tokens/sub-account" -H "accept: application/json" -H "content-type: application/json" -H "X-API-TOKEN: ${var.master_api_token}" -d "{ "name": "Default API Token", "accountId":${logzio_subaccount.subaccount.account_id}}"
SCRIPT

delete = <<SCRIPT
  echo "There is no API to destroy the API token."
SCRIPT

}
}