feat: add RedisEventStore for production SSE resumability #2265

Job	Run time
checks / pre-commit	34s
checks / readme-snippets	11s
checks / test (3.13, locked, ubuntu-latest)	42s
checks / test (3.10, locked, ubuntu-latest)	52s
checks / test (3.11, locked, windows-latest)	2m 36s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 5s
checks / test (3.12, locked, ubuntu-latest)	54s
checks / test (3.10, lowest-direct, ubuntu-latest)	58s
checks / test (3.10, locked, windows-latest)	2m 36s
checks / test (3.10, lowest-direct, windows-latest)	2m 50s
checks / test (3.11, lowest-direct, ubuntu-latest)	57s
checks / test (3.11, lowest-direct, windows-latest)	2m 35s
checks / test (3.11, locked, ubuntu-latest)	51s
checks / test (3.12, locked, windows-latest)	3m 28s
checks / test (3.13, locked, windows-latest)	2m 29s
checks / test (3.12, lowest-direct, windows-latest)	3m 38s
checks / test (3.13, lowest-direct, ubuntu-latest)	55s
checks / test (3.14, locked, ubuntu-latest)	2m 17s
checks / test (3.14, locked, windows-latest)	3m 12s
checks / test (3.14, lowest-direct, windows-latest)	2m 34s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 22s
checks / test (3.13, lowest-direct, windows-latest)	2m 37s
all-green	3s
	40m 16s

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