Add internal logging to HTTP libraries #7746

Job	Run time
external-types (opentelemetry)	1m 2s
test (ubuntu-latest, stable)	2m 17s
external-types (opentelemetry-sdk)	1m 5s
docs	1m 6s
test (ubuntu-latest, beta)	2m 33s
cargo-deny	25s
external-types (opentelemetry-otlp)	1m 15s
test (stable, windows-latest)	5m 22s
external-types (opentelemetry-zipkin)	1m 5s
test (stable, macos-latest)	2m 12s
lint	3m 30s
msrv (windows-latest, 1.75.0)	2m 41s
test (stable, otel-linux-arm64)	3m 45s
msrv (ubuntu-latest, 1.75.0)	1m 23s
coverage	2m 32s
	32m 13s

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