Add new pt and pt-BR translations for Alert module and update global PT strings (#3965)

- Added new pt.json and pt-br.json in alert/translations
- Updated main pt.json (global translations)
- Updated alert.js to load new languages
- Added entry to CHANGELOG.md

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Co-authored-by: veeck <gitkraken@veeck.de>

modules/default/alert/alert.js

@@ -30,6 +30,8 @@ Module.register("alert", {
 			fr: "translations/fr.json",
 			hu: "translations/hu.json",
 			nl: "translations/nl.json",
+			pt: "translations/pt.json",
+			"pt-br": "translations/pt-br.json",
 			ru: "translations/ru.json",
 			th: "translations/th.json"
 		};

modules/default/alert/translations/pt-br.json

@@ -0,0 +1,4 @@
+{
+	"sysTitle": "Notificação do MagicMirror²",
+	"welcome": "Bem-vindo, o sistema iniciou com sucesso!"
+}

modules/default/alert/translations/pt.json

@@ -0,0 +1,4 @@
+{
+	"sysTitle": "Notificação do MagicMirror²",
+	"welcome": "Bem-vindo, o sistema iniciou com sucesso!"
+}