created a branch for the new mdstore
some fixes
dli dedup & indexing, work in progress
fixed dependencies
moved model classes to dnet-dli-domain
removed useless mdformat param from FetchMdStore, and changed implementation of abastract OAI Node
implemented Resolving Record Workflows
Added and Refactored the Resolver for DLI
depending on common model dnet-graph-domain
added standard maven folder structure