feat(Tracing): Allow to specify extra attributes on http calls

[noveo-landa]

Usage example

1. To manage request span attributes:
   The main purpose is to hide request body/attributes from the attributes

$options = [
    'extra' => [
        'span_attributes' => ['request.headers'] // supported "request.headers" and "request.body", both are activated by default
    ]
]

$this->client->request('get', 'https://example.com/spmething', $options);

2. to add extra attributes to the span:
   The main purpose is to add service specific attributes and help the otel-collector to map data

$options = [
    'extra' => [
        'extra_attributes' => ['endpoint' => 'services', 'adapter' => 'foo']
    ]
]

$this->client->request('get', 'https://example.com/spmething', $options);

3. To specify trace name
   This name will be name of the trace on jaeger. If not specified it will be method and url. Ex: get api.demo.distribusion.com

$options = [
    'extra' => [
        'operation_name' => 'trains.distribusion.services'
    ]
]

$this->client->request('get', 'https://example.com/spmething', $options);

[cdaguerre]

@noveo-landa hi dimitri, could you fix the tests?

[noveo-landa]

@cdaguerre please check it again