Add a client-side response cache honoring SEP-2549 caching hints #3217

Job	Run time
checks / readme-snippets	16s
checks / pre-commit	46s
checks / docs	42s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 14s
checks / test (3.10, locked, windows-latest)	1m 59s
checks / test (3.11, locked, ubuntu-latest)	1m 15s
checks / test (3.10, lowest-direct, windows-latest)	2m 4s
checks / test (3.12, locked, ubuntu-latest)	1m 34s
checks / test (3.11, locked, windows-latest)	1m 48s
checks / test (3.10, locked, ubuntu-latest)	1m 19s
checks / test (3.13, locked, ubuntu-latest)	1m 8s
checks / test (3.11, lowest-direct, windows-latest)	1m 49s
checks / test (3.14, lowest-direct, windows-latest)	1m 35s
checks / test (3.12, locked, windows-latest)	2m 0s
checks / test (3.13, lowest-direct, windows-latest)	1m 52s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 20s
checks / test (3.13, locked, windows-latest)	2m 6s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 6s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 22s
checks / test (3.14, locked, windows-latest)	2m 26s
checks / test (3.12, lowest-direct, windows-latest)	1m 53s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 16s
checks / test (3.14, locked, ubuntu-latest)	2m 14s
all-green	3s
	35m 7s

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