Add the client-side subscriptions/listen driver #3400

Job	Run time
checks / docs	39s
checks / readme-snippets	11s
checks / pre-commit	58s
checks / test (3.10, locked, ubuntu-latest)	1m 37s
checks / test (3.12, lowest-direct, windows-latest)	1m 45s
checks / test (3.11, lowest-direct, windows-latest)	2m 21s
checks / test (3.14, locked, windows-latest)	2m 36s
checks / test (3.11, locked, windows-latest)	2m 6s
checks / test (3.13, lowest-direct, windows-latest)	2m 7s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 24s
checks / test (3.13, locked, ubuntu-latest)	1m 17s
checks / test (3.10, lowest-direct, windows-latest)	1m 53s
checks / test (3.14, lowest-direct, windows-latest)	1m 52s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 34s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 23s
checks / test (3.12, locked, windows-latest)	1m 51s
checks / test (3.10, locked, windows-latest)	1m 59s
checks / test (3.14, locked, ubuntu-latest)	2m 20s
checks / test (3.12, locked, ubuntu-latest)	1m 33s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 14s
checks / test (3.13, locked, windows-latest)	1m 44s
checks / test (3.11, locked, ubuntu-latest)	1m 4s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 18s
all-green	2s
	36m 48s

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