Add Portuguese translation

This PR adds Portuguese as a language option, language code pt.

lang.toml

@@ -22,6 +22,13 @@ cover-letter = "Συνοδευτική Επιστολή"
 attached = "Συνημμένο"
 curriculum-vitae = "Βιογραφικό"
 
+[lang.pt]
+resume = "Currículo"
+dear = "Caro(a)"
+cover-letter = "Carta de Apresentação"
+attached = "Em anexo"
+curriculum-vitae = "Currículo"
+
 [lang.sp]
 resume = "Currículum"
 dear = "Estimado"