`torrent.WebseedPeerConns()` method #1070

Job	Run time
test-386 (1.21)	6h 0m 15s
bench (1.21)	3m 45s
build-wasm (1.21)	45s
test-benchmarks (1.21)	3m 48s
torrentfs-linux (1.21, ubuntu-latest)	3m 37s
test (1.21, windows-latest)	5m 2s
test (1.21, macos-latest)	4m 20s
test (1.21, ubuntu-latest)	10m 15s
	6h 31m 47s

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