feat: add RedisEventStore for production SSE resumability #2262

Job	Run time
checks / pre-commit	37s
checks / readme-snippets	15s
checks / test (3.10, locked, windows-latest)	2m 22s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 3s
checks / test (3.12, locked, ubuntu-latest)	55s
checks / test (3.12, lowest-direct, windows-latest)	2m 46s
checks / test (3.11, lowest-direct, windows-latest)	2m 33s
checks / test (3.12, locked, windows-latest)	4m 23s
checks / test (3.11, locked, windows-latest)	2m 29s
checks / test (3.11, locked, ubuntu-latest)	56s
checks / test (3.14, locked, windows-latest)	3m 13s
checks / test (3.14, lowest-direct, windows-latest)	2m 19s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 24s
checks / test (3.10, locked, ubuntu-latest)	57s
checks / test (3.13, lowest-direct, ubuntu-latest)	56s
checks / test (3.11, lowest-direct, ubuntu-latest)	55s
checks / test (3.14, locked, ubuntu-latest)	2m 24s
checks / test (3.13, locked, windows-latest)	2m 39s
checks / test (3.13, lowest-direct, windows-latest)	2m 45s
checks / test (3.13, locked, ubuntu-latest)	48s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 1s
checks / test (3.10, lowest-direct, windows-latest)	1m 54s
all-green	2s
	39m 36s

Provide feedback