Add Brazilian Portuguese (pt-BR) translation support to Kan (#276)

* adding Brazilian Portuguese translation; added a repository on Docker Hub to use in Umbrel — version ptbr jovaniojunior/kan-ptbr:latest

* add notes to changelog.md

* adjust pt-BR date format in date-fns

* improve Portuguese integration across code functions and other small pt-BR tweaks

* chore: gen missing translations

---------

Co-authored-by: Henry <henry_ball@hotmail.co.uk>

apps/web/src/locales/index.ts

@@ -7,6 +7,7 @@ export const locales = [
   "nl",
   "ru",
   "pl",
+  "ptbr"
 ] as const;
 
 export type Locale = (typeof locales)[number];
@@ -22,4 +23,5 @@ export const localeNames: Record<Locale, string> = {
   nl: "Nederlands",
   ru: "Русский",
   pl: "Polski",
+  ptbr: "Português",
 };