feat: allow pluggable tower layers in connector service stack #2248

Job	Run time
Check Style	5s
MSRV	1m 29s
unstable features	55s
linux / nightly	1m 24s
Android	21s
WASM	47s
linux / stable	1s
linux / beta	1s
macOS / stable	1s
windows / stable-x86_64-msvc	1s
windows / stable-i686-msvc	1s
windows / stable-x86_64-gnu	1s
windows / stable-i686-gnu	1s
feat.: default-tls disabled	44s
feat.: rustls-tls	47s
feat.: rustls-tls-manual-roots	1s
feat.: rustls-tls-native-roots	47s
feat.: rustls-tls-no-provider	1s
feat.: native-tls	48s
feat.: default-tls and rustls-tls	48s
feat.: rustls-tls and rustls-tls-no-provider	34s
feat.: cookies	49s
feat.: blocking	33s
feat.: blocking only	37s
feat.: gzip	47s
feat.: brotli	48s
feat.: deflate	48s
feat.: json	48s
feat.: multipart	47s
feat.: stream	1s
feat.: socks/default-tls	1s
feat.: socks/rustls-tls	1s
feat.: hickory-dns	47s
feat.: zstd	1s
Docs	0s
CI is green	0s
	16m 26s

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