Add Received Receipts with state and metadata

[ColePBryan]

Create a wrapper class around receipts that hold metadata while they are in flight.

This should include:

• The receipt itself
• query id (some unique value to tie it to the query so it can request appraised value etc.)
• State of the receipt (received, checking (1+ checks started), error (1+ checks failed), Ok (All checks passed)
• Included in RAV Request
• Included in latest RAV (This would likely show it is ready to be deleted, since it has been "payed for")
• List of all checks and their results (None (unchecked), Some(Ok()) (passed check), Some(Err(ERROR)) (failed check))