feat: add generate strong password button to Add Members form

Add a "Generate strong password" button with Sparkles icon to the
Add Members form in Settings > People. Generated passwords are shown
in plain text with a copy button and an amber warning to copy before
creating the user. Also upgraded the button style on the change
password page to match. Translated copy/warning strings for all 21
locales.

Closes #139

packages/shared/src/i18n/pt-BR.ts

@@ -1509,6 +1509,9 @@ export const ptBR: TranslationKeys = {
       resetPasswordAction: "Redefinir senha",
       deleteUserAction: "Excluir usuario",
       saveButton: "Salvar",
+      copyPasswordButton: "Copiar senha",
+      passwordCopied: "Copiado!",
+      copyPasswordWarning: "Copie esta senha agora. Voce nao podera ve-la apos criar o usuario.",
     },
     teams: {
       heading: "Equipes",