chore: hide internal features #1539

Job	Run time
Docs	1m 25s
Check Style	7s
Android	32s
linux / nightly	1m 15s
MSRV	7m 36s
linux / stable	46s
unstable features	43s
WASM	2m 30s
linux / beta	1m 9s
macOS / stable	2m 22s
windows / stable-x86_64-msvc	4m 29s
windows / stable-i686-msvc	3m 5s
windows / stable-x86_64-gnu	8m 24s
windows / stable-i686-gnu	7m 57s
feat.: default-tls disabled	1m 31s
feat.: rustls-tls	1m 38s
feat.: rustls-tls-manual-roots	56s
feat.: native-tls	1m 16s
feat.: default-tls and rustls-tls	1m 11s
feat.: cookies	1m 10s
feat.: blocking	2m 23s
feat.: gzip	1m 6s
feat.: brotli	1m 1s
feat.: deflate	56s
feat.: json	1m 2s
feat.: multipart	55s
feat.: stream	52s
feat.: socks/default-tls	1m 31s
feat.: socks/rustls-tls	1m 30s
feat.: trust-dns	1m 3s
CI is green	1s
	1h 2m 22s

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