feat(hub-common): add IExportPostsParams interface (#1744) #891

Job	Run time
Build and Test (ubuntu-latest, 16)	5m 25s
Build and Test (ubuntu-latest, 16)	4m 34s
Release	3m 45s
Release	4m 9s
Deploy Documentation	0s
Deploy Documentation / build-and-deploy	3m 8s
	21m 1s

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