Ballerina basic authentication

basic-auth-0.980.0.bal

endpoint http:Client basicAuthClient {
   url: "https://www.example.org/api/v1",
   auth: {
       scheme: http:BASIC_AUTH,
       username: "admin",
       password: "123"
   }
};

public function testBasicAuth() {
   string requestPath = "/employees";
   var response = basicAuthClient -> get(requestPath);
   io:println(response);
}