Add experimental Server Cards support (SEP-2127) #2956

Job	Run time
checks / pre-commit	48s
checks / readme-snippets	10s
checks / test (3.10, lowest-direct, windows-latest)	1m 41s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 8s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.10, locked, ubuntu-latest)	1m 2s
checks / test (3.10, locked, windows-latest)	1m 36s
checks / test (3.11, locked, ubuntu-latest)	59s
checks / test (3.12, locked, ubuntu-latest)	1m 4s
checks / test (3.11, lowest-direct, windows-latest)	1m 30s
checks / test (3.13, lowest-direct, windows-latest)	1m 22s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.14, locked, windows-latest)	2m 18s
checks / test (3.14, locked, ubuntu-latest)	2m 5s
checks / test (3.13, locked, windows-latest)	1m 30s
checks / test (3.12, lowest-direct, windows-latest)	1m 31s
checks / test (3.14, lowest-direct, windows-latest)	1m 30s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.14, lowest-direct, ubuntu-latest)	58s
checks / test (3.13, locked, ubuntu-latest)	54s
checks / test (3.11, locked, windows-latest)	1m 37s
checks / test (3.12, locked, windows-latest)	1m 40s
all-green	4s
	28m 48s

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