feat: Add DHT and RequestResponse notifications #1238

Job	Run time
changes	6s
run-checks (ubuntu-latest, stable)	1m 26s
run-tests (ubuntu-latest, stable, all)	13m 6s
run-checks (ubuntu-latest, nightly)	1m 36s
run-tests (ubuntu-latest, stable, none)	3h 29m 57s
run-docs	2m 40s
run-checks (macos-latest, stable)	1m 44s
run-deny	1m 13s
run-tests (ubuntu-latest, nightly, all)	14m 46s
run-checks (macos-latest, nightly)	4m 2s
run-tests (ubuntu-latest, nightly, none)	3h 31m 38s
run-checks (windows-latest, stable)	5m 30s
run-tests (macos-latest, stable, all)	3h 43m 21s
run-checks (windows-latest, nightly)	5m 26s
run-tests-windows (stable, all)	46m 28s
run-tests (macos-latest, stable, none)	3h 35m 30s
run-tests-windows (stable, none)	2m 54s
run-tests (macos-latest, nightly, all)	3h 45m 3s
run-tests-windows (nightly, all)	49m 13s
run-tests (macos-latest, nightly, none)	3h 35m 43s
run-tests-windows (nightly, none)	8m 15s
	1d 0h 19m 37s

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