Add create/load/refereshRepository() methods to IRepositoryManager #156

Job	Run time
check-merge-commits / Block Merge Commits	11s
build / Upload Event File	4s
build / Verify Linux	5m 14s
check-freeze-period / verify-freeze-period	1s
build / Verify Windows	10m 2s
build / Verify MacOS	5m 21s
	20m 53s

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