feat: add Spanish localization

[obdulia-losantos]

---

name: Spanish lang
about: Added Spanish localization
assignees: fabiocaccamo

Describe your changes
Added Spanish language files

Related issue
N/A

Checklist before requesting a review

• I have performed a self-review of my code.
• I have added tests for the proposed changes.
• I have run the tests and there are not errors.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.34%. Comparing base (631c6ff) to head (b6dabf5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #182   +/-   ##
=======================================
  Coverage   85.34%   85.34%           
=======================================
  Files          21       21           
  Lines         430      430           
=======================================
  Hits          367      367           
  Misses         63       63           

Flag	Coverage Δ
unittests	85.34% <ø> (ø)

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