feat(core): add propertyCount util
feat(core): add propertyCount util

zenmumbler/libzm,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,stardazed/stardazed,zenmumbler/libzm,zenmumbler/libzm,stardazed/stardazed,zenmumbler/libzm,stardazed/stardazed-tx,stardazed/stardazed-tx