[FEATURE] Add Italian (IT) and Portuguese (PT) locales

[NovaCode37]

PRISM currently supports EN, RU, and DE. Let's expand our localization by adding Italian (IT) and Portuguese (PT) translations.

What to do

1. Go to frontend/src/messages/.
2. Duplicate en.json and name the new files it.json and pt.json.
3. Translate the JSON keys to Italian and Portuguese.
4. Add the new languages to frontend/src/lib/i18n.tsx configuration array so users can select them.

Acceptance criteria

• No broken JSON syntax.
• Translations are accurate (Google Translate/DeepL is fine, native speakers preferred).
• IT and PT flags/selectors appear in the UI language switcher.

[githubuser16384]

Hi @NovaCode37,
I have gone through the issue and would like to contribute to the same. Kindly assign the issue to me.

[NovaCode37]

Hi @NovaCode37, I have gone through the issue and would like to contribute to the same. Kindly assign the issue to me.

Hii, sure!