test: add electron transport interop ping test #4728

Job	Run time
Build	3m 18s
Test example js-libp2p-example-chat	3m 26s
Test example js-libp2p-example-browser-pubsub	3m 49s
Test example js-libp2p-example-peer-and-content-routing	1m 5s
Test example js-libp2p-example-connection-encryption	1m 14s
Test example js-libp2p-example-circuit-relay	4m 46s
Test example js-libp2p-example-webrtc-private-to-private	3m 2s
Test example js-libp2p-example-delegated-routing	4m 25s
Test example js-libp2p-example-pnet	1m 19s
Test example js-libp2p-example-custom-protocols	3m 9s
Test example js-libp2p-example-discovery-mechanisms	3m 29s
Test example js-libp2p-example-protocol-and-stream-muxing	2m 2s
Test example js-libp2p-example-pubsub	1m 43s
Test example js-libp2p-example-transports	1m 2s
	37m 49s

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