refactor: create dndb adapter

[twilson63]

We need an adapter for the nano image, the nano image runs hyper without any external servers.

• createDatabase
• removeDatabase
• createDocument
• retrieveDocument
• updateDocument
• removeDocument
• listDocuments
• queryDocuments
• indexDocuments
• bulkDocuments

[twilson63]

Got first pass at this adapter completed. need to work on another pass to handle things like limit for listDocuments and queryDocuments