Add the product tax total in Fiscal Coupon and NF-e.

- Calculate and add the taxes total in txt file(NF-e) and promotional message(ECF)
New functionality according to Law 12,741 - Taxes in Coupon

Change-Id: Iaa36f09a62da436cea46d16f837f75f80f0a6ecb
Merge "Add the product tax total in Fiscal Coupon and NF-e."