Enumeration PieceStatus

Status of the piece, e.g. "pending removal", "active", "orphaned"

• PENDING_REMOVAL: the piece is scheduled for deletion, but still showing on chain
• ACTIVE: the piece is active, onchain and known by the provider
• ONCHAIN_ORPHANED: the piece is not known by the provider, but still on chain
• OFFCHAIN_ORPHANED: the piece is known by the provider, but not on chain

The orphaned states should not happen, but have been observed and should be logged and displayed to the user.