refactor: replace channel with callback of transport in swarm #1183

Job	Run time
Check rustfmt style && run clippy	1m 31s
Check rustfmt style && run clippy	1m 31s
Build and test for wasm (ubuntu-latest)	4m 36s
Build and test for wasm (ubuntu-latest)	4m 36s
Build and test for examples (ubuntu-latest)	2m 45s
Build and test for examples (ubuntu-latest)	2m 45s
Build and test (ubuntu-latest)	8m 29s
Build and test (ubuntu-latest)	7m 55s
Build and test for examples (macos-latest)	3m 30s
Build and test for examples (macos-latest)	3m 30s
	41m 8s

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