Add experimental Server Cards support (SEP-2127) #3560

Job	Run time
checks / readme-snippets	14s
checks / pre-commit	51s
checks / docs	1m 10s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 30s
checks / test (3.14, lowest-direct, windows-latest)	1m 51s
checks / test (3.10, lowest-direct, windows-latest)	1m 50s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 24s
checks / test (3.14, locked, windows-latest)	2m 33s
checks / test (3.12, lowest-direct, windows-latest)	1m 57s
checks / test (3.10, locked, windows-latest)	1m 56s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 33s
checks / test (3.11, lowest-direct, windows-latest)	2m 3s
checks / test (3.13, locked, windows-latest)	2m 8s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 22s
checks / test (3.12, locked, windows-latest)	1m 37s
checks / test (3.10, locked, ubuntu-latest)	1m 34s
checks / test (3.12, locked, ubuntu-latest)	1m 41s
checks / test (3.13, lowest-direct, windows-latest)	1m 52s
checks / test (3.13, locked, ubuntu-latest)	1m 12s
checks / test (3.11, locked, windows-latest)	1m 53s
checks / test (3.14, locked, ubuntu-latest)	1m 21s
checks / test (3.11, locked, ubuntu-latest)	1m 30s
all-green	7s
	36m 35s

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