Index API client: add timeout to requests

[josecelano]

The API client does not have any timeout. The client waits indefinitely for responses. That should not be the default behaviour. It should return an error after a timeout. The users using the client should handle the timeout or any other error.

Subtasks

• Move generic HTTP client to HTTP mod.
• Generic HTTP client: Inject the scheme part of the URL in the constructor.
• Add timeouts to the generic HTTP client.
• Remove unwraps from the generic HTTP client. Return errors.
• Remove unwraps from the Index API HTTP client. Return errors.

[josecelano]

ACK 47f5242