Full URL HTTP transport support

[Hyaxia]

Please tell us about your environment:

• winston@3

What is the problem?

Could not set up the default HTTP transport to use only a full url.
For example, if I want to send a request to https://test.io/test_endpoint, I could not find any option to do so, because the default transport expects to receive port, host and more parameters which are not relevant in this case.

Maybe I have missed the option somewhere, if so, I'll be glad to be pointed to the right place.
If the feature really does not exist, I'd love to work on it

[Hyaxia]

For the time being, I have creating this repo that has a custom http transport to solve the problems I had...