Add network utility to simplify the steps to fake http or https requests

To use injectorpp faking a http or https request is non-trivial. It requires faking low level functions. See [reqwest.rs](https://github.com/microsoft/injectorppforrust/blob/main/tests/reqwest.rs) as an example.

An utility needs to be created to abstract away the low level faking steps. Users should only need to leverage the high level APIs to fake http or https requests.