Add 5 new languages to exampleSite: German, French, Spanish, Portuguese

Add complete translations for:
- German (de)
- French (fr)
- Spanish (es)
- Portuguese Brazil (pt-br)
- Portuguese Portugal (pt-pt)

Changes include:
- Language config files (languages.*.toml)
- Menu config files (menus.*.toml)
- Translated docs section (16 files x 5 langs)
- Translated homepage, guides, samples
- Translated examples, authors, tags sections
- Translated users section (112 dirs x 5 langs)
- Fixed YAML front matter formatting in user files

Hugo build now supports 9 languages total.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

exampleSite/content/users/02c452502ee9a03866c720c14bf86f9e/index.it.md

@@ -1,14 +1,14 @@
 ---
-                title: "nveshaan"
-                tags: [Sito personale]
-                externalUrl: "https://nveshaan.github.io/"
-                weight: 70
-                showDate: false
-                showAuthor: false
-                showReadingTime: false
-                showEdit: false
-                showLikes: false
-                showViews: false
-                layoutBackgroundHeaderSpace: false
-                
+title: "nveshaan"
+tags: [Sito personale]
+externalUrl: "https://nveshaan.github.io/"
+weight: 70
+showDate: false
+showAuthor: false
+showReadingTime: false
+showEdit: false
+showLikes: false
+showViews: false
+layoutBackgroundHeaderSpace: false
+
 ---