fix #29: fill TasaOCuotaP with zeros for comparison

[Ahuahuachi]

Pull Request Template

Description

Se añaden ceros al momento de comparar el nodo TasaOCuota para identificar los impuestos trasladados al generar un CEP

Fixes #29

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have checked my code and corrected any misspellings