feat: wrap_connector from builder WantsProtocols1 #407

Job	Run time
Clippy	35s
Check for documentation errors	30s
Build+test (stable, ubuntu-20.04)	1m 41s
features	1m 10s
Build+test (beta, ubuntu-20.04)	1m 33s
Format	4s
Build+test (nightly, ubuntu-20.04)	1m 41s
msrv	1m 1s
Build+test (macos-latest, stable)	5m 22s
Check semver compatibility	30s
Build+test (windows-latest, stable)	6m 13s
	20m 20s

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