Add experimental Server Cards support (SEP-2127) #2929

Job	Run time
checks / pre-commit	42s
checks / readme-snippets	11s
checks / test (3.10, locked, windows-latest)	1m 44s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.10, lowest-direct, windows-latest)	1m 55s
checks / test (3.10, locked, ubuntu-latest)	1m 4s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 4s
checks / test (3.11, lowest-direct, windows-latest)	1m 33s
checks / test (3.11, locked, ubuntu-latest)	56s
checks / test (3.13, locked, windows-latest)	1m 22s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 13s
checks / test (3.13, lowest-direct, ubuntu-latest)	59s
checks / test (3.12, lowest-direct, windows-latest)	1m 49s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 6s
checks / test (3.12, locked, ubuntu-latest)	1m 9s
checks / test (3.13, locked, ubuntu-latest)	54s
checks / test (3.11, locked, windows-latest)	1m 36s
checks / test (3.14, lowest-direct, windows-latest)	1m 30s
checks / test (3.14, locked, ubuntu-latest)	2m 1s
checks / test (3.12, locked, windows-latest)	1m 43s
checks / test (3.14, locked, windows-latest)	2m 27s
checks / test (3.13, lowest-direct, windows-latest)	1m 55s
all-green	4s
	30m 4s

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