Register Ledger

Function:

fun register_ledger(
    registry: &mut LedgerRegistry,
    collection_id: ID,
    currency_type: TypeName,
    ledger_id: ID
)

Description:

• Adds a trade ledger reference to the registry.

• Ensures that each collection has only one ledger per currency.

Validations:

• A ledger must not already exist for the collection.