Builder for a Client backed by on java.net.HttpUrlConnection.
The java.net client adds no dependencies beyond http4s-client.
This client is generally not production grade, but convenient for
exploration in a REPL.
All I/O operations in this client are blocking.
An ExecutionContext on which
blocking operations will be performed.
Creates a Client.
The shutdown of this client is a no-op. Creation of the client allocates no
resources, and any resources allocated while using this client
are reclaimed by the JVM at its own leisure.