Adding CosmosStore class and UT's

3 jobs for !7 with haaggarw/ind/7627085 in 7 minutes and 33 seconds
detached
Status Name Job ID Coverage
  Review
passed trigger-trusted-tests #17000

00:07:33

failed trigger-trusted-tests #16999

00:00:21

failed trigger-trusted-tests #16951

00:01:48