chore: add slatedb as a show case #235

Job	Run time
misc check	9s
rust udeps test (ubuntu-latest)	1m 19s
rust udeps test (macos-latest)	1m 19s
rust udeps test (windows-latest)	2m 5s
rust ffmt check (ubuntu-latest)	13s
rust test with codecov (ubuntu-latest, stable)	10m 26s
rust ffmt check (macos-latest)	16s
rust ffmt check (windows-latest)	29s
rust test with codecov (ubuntu-latest, 1.82.0)	10m 29s
run with address saniziter	5m 51s
rust test with codecov (macos-latest, stable)	5m 3s
rust test with codecov (macos-latest, 1.82.0)	5m 14s
rust test with codecov (windows-latest, stable)	11m 20s
run with single worker thread and deadlock detection	4m 38s
run with leak saniziter	5m 20s
rust test with codecov (windows-latest, 1.82.0)	9m 17s
check build with madsim	1m 26s
	1h 14m 54s

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