Move request telemetry to LiveStripeResponseGetter

[richardm-stripe]

Summary

Moves responsibility for calculating queuing/calculating telemetry payloads and setting the X-Stripe-Client-Telemetry header from HTTPClient to LiveStripeResponseGetter.

Details

There are public requestWithTelemetry methods on HTTPClient that I changed to not trigger any (additional) telemetry anymore. It's a significant behavior change for a hypothetical user calling these methods directly, but I don't consider this a supported use.

Motivation

HTTPClient should be responsible for sending already-calculated HTTP requests, it shouldn't be responsible for calculating what to put in the HTTP request itself. See discussion at https://github.com/stripe/stripe-java/pull/1721/files#r1454137531

Test strategy

Pretty good existing end-to-end telemetry test:

stripe-java/src/test/java/com/stripe/functional/TelemetryTest.java

Line 25 in c044fab

public class TelemetryTest extends BaseStripeTest {

[pakrym-stripe]

So clean!