Add experimental Server Cards support (SEP-2127) #2466

Job	Run time
checks / pre-commit	31s
checks / readme-snippets	13s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 3s
checks / test (3.11, lowest-direct, windows-latest)	2m 39s
checks / test (3.10, lowest-direct, windows-latest)	2m 14s
checks / test (3.11, locked, ubuntu-latest)	54s
checks / test (3.10, locked, ubuntu-latest)	56s
checks / test (3.13, locked, ubuntu-latest)	1m 3s
checks / test (3.12, lowest-direct, windows-latest)	2m 53s
checks / test (3.12, locked, ubuntu-latest)	1m 5s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 2s
checks / test (3.10, locked, windows-latest)	2m 11s
checks / test (3.11, locked, windows-latest)	2m 49s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 10s
checks / test (3.12, locked, windows-latest)	3m 0s
checks / test (3.14, lowest-direct, windows-latest)	2m 17s
checks / test (3.14, locked, windows-latest)	3m 6s
checks / test (3.13, lowest-direct, windows-latest)	2m 29s
checks / test (3.14, locked, ubuntu-latest)	2m 20s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 5s
checks / test (3.13, locked, windows-latest)	2m 35s
checks / test (3.13, lowest-direct, ubuntu-latest)	59s
all-green	4s
	38m 38s

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