feat(i18n): add Italian language support (#677)

Add complete Italian (it) translations for all 7 namespaces:
common, auth, settings, sidebar, chat, codeEditor, and tasks.

Register Italian in languages.js and i18n config.
Add .gitignore exception for it/tasks.json.

Co-authored-by: Simos Mikelatos <simosmik@gmail.com>

src/i18n/languages.js

@@ -39,6 +39,11 @@ export const languages = [
     label: 'German',
     nativeName: 'Deutsch',
   },
+  {
+    value: 'it',
+    label: 'Italian',
+    nativeName: 'Italiano',
+  },
 ];
 
 /**