Add pt-BR translation for AIFF/WAVE error messages

[brunolmfg]

I'm translating the error messages of several modules. That translation is to modules for identification and validation of AIFF or WAVE files. The added properties file is UTF-8 encoded.

That's a contribution by Hacktoberfest and the OPF Document Hack Week.

See #474.

[codecov]

Codecov Report

Merging #493 into integration will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff               @@
##             integration     #493   +/-   ##
==============================================
  Coverage          45.77%   45.77%           
  Complexity          1050     1050           
==============================================
  Files                 57       57           
  Lines               9150     9150           
  Branches            1686     1686           
==============================================
  Hits                4188     4188           
  Misses              4416     4416           
  Partials             546      546

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 171947f...30e0b9c. Read the comment docs.

[carlwilson]

@brunolmfg Thanks very much for this, I'll start the search for a review but I do have somebody in mind.