Add hu_HU for Hungarian locale (#7560)

## Description of changes

Added Hungarian locale files, and corresponding translation

For the translation I mainly relied on my native skills, double checked
my work using LLMs.

Copilot generated summary:

This pull request introduces Hungarian language support to the
application by adding translations and updating the locale
configurations. The most important changes include the addition of
Hungarian translations in the `.po` file and registering the new locale
in the application's supported locales.

### Hungarian Language Support:

* Added Hungarian translations for various UI elements and messages in
the `po/hu_HU.UTF-8.po` file. This includes translations for prompts,
dialogs, menus, and other interface components.
* Updated the supported locales list in `src/os/i18n.zig` to include
`hu_HU.UTF-8`, enabling Hungarian as an available language option.

## Picture(s) of the translation


![image](https://github.com/user-attachments/assets/60f47f11-d55e-4408-889b-5b44ecaffc23)

src/os/i18n.zig

@@ -49,6 +49,7 @@ pub const locales = [_][:0]const u8{
     "ca_ES.UTF-8",
     "bg_BG.UTF-8",
     "ga_IE.UTF-8",
+    "hu_HU.UTF-8",
     "he_IL.UTF-8",
 };