request abstract method

Executes an HTTP request.

This is the core method that performs the actual HTTP request using the underlying HTTP client library.

Parameters:

• request: The request configuration containing URL, method, headers, body, etc.

Returns a Future that completes with an AdapterResponse containing the response data, status code, headers, etc.

Throws AdapterException if the request fails due to timeout, network error, or other issues.

Example:

final request = AdapterRequest(
  baseUrl: 'https://api.example.com',
  path: '/users/123',
  method: HttpMethod.get,
);
final response = await adapter.request(request);
print('Status: ${response.statusCode}');
print('Data: ${response.data}');