feat: allowing configuration of application level callbacks #5906

Job	Run time
changes	5s
build-ubuntu-22.04	21m 41s
test-ubuntu-22.04	29m 26s
build-macos-13	23m 7s
test-macos-13	29m 22s
build-docker-image / docker-build-ubuntu-22.04	4m 43s
js-waku-node-optional / node	1m 12s
js-waku-node / node	6h 0m 13s
Lint	36s
	7h 50m 25s

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