Make poll interval configurable per source #2115

Job	Run time
Audit dependencies	21s
Clippy (x86_64-unknown-linux-gnu, false, true)	32s
Format	5s
Clippy (armv7-unknown-linux-gnueabihf, true, false, -target arm-linux-gnueabihf -mcpu=generic+v7a...	27s
Build and test (stable, ubuntu-latest, x86_64-unknown-linux-gnu)	38s
Clippy (x86_64-unknown-linux-musl, true, false, -target x86_64-linux-musl)	25s
Build and test (beta, ubuntu-latest, x86_64-unknown-linux-gnu)	33s
Clippy (x86_64-apple-darwin, true, false, -target x86_64-macos-gnu -g)	31s
Build and test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	40s
Smoke-test fuzzing targets	3m 47s
Validate man pages	6s
Build and test (stable, ubuntu-latest, x86_64-unknown-linux-musl)	34s
Smoke-test fuzzing targets (--all-features)	3m 48s
Build and test (stable, macos-latest, x86_64-apple-darwin)	46s
Check unused dependencies	51s
Build and test (stable, ubuntu-latest, --all-features, x86_64-unknown-linux-gnu)	27s
Build and test (msrv, ubuntu-latest, --all-features, x86_64-unknown-linux-gnu)	33s
Validate configs	34s
Build and test (stable, ubuntu-latest, --all-features, x86_64-unknown-linux-musl)	44s
Build and test (stable, macos-latest, --all-features, x86_64-apple-darwin)	39s
	17m 1s

Provide feedback