IBM Cloud Core SDK

This crate is an abstraction from de api referenced in docs.

The first abstraction is about the Identity Manager: https://cloud.ibm.com/apidocs/iam-identity-token-api.json

Single implementation of Authenticate with Token and API key:

```rust use crate::assistant::v2::AssistantClient; use crate::authenticators::token_api::{AuthenticatorApiClient, TokenApiKeyRequest};

[tokio::main]

async fn main() {

let auth = AuthenticatorApiClient::new("https://iam.cloud.ibm.com/identity/token".to_string());
let req = TokenApiKeyRequest::new("<YOUR-API-KEY>".to_string());
let token = auth.authenticate(req).await;
println!("{:?}",token);

} ```