Adjustment type and VND currency

[danbillson]

Changes:

• Adds VND as a supported currency value

• Introduces the optional type to adjustments which can be partial or full if this value is not provided it will be treated as partial with the use of items but now you can also provide full to omit the items

• The AdjustmentType type already existed but referred to the item type which has now been renamed to AdjustmentItemType to make space for the new AdjustmentType

Usage:

  const adjustment = await paddle.adjustments.create({
    action: "refund",
    reason: "Customer requested a refund",
    transactionId,
    type: "full",
  });