Add restate-memory crate with EstimatedMemorySize trait #7365

Job	Run time
plan	47s
custom-docker-build-release	0s
custom-ci	0s
build-global-artifacts	0s
build-local-artifacts (${{ join(matrix.targets, ', ') }})	0s
custom-notarize	0s
custom-npm	0s
custom-release-notes	0s
host	0s
custom-docker-push-release	-1s
announce	-1s
custom-homebrew	-1s
custom-helm	-1s
	43s

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