feat: child menu support in navbar (#695)

* feat: implement child menu support in main navbar

- Added a new JavaScript file for handling dropdown functionality in the navbar.
- Implemented event listeners for toggling dropdowns, closing them on outside clicks, and dismissing with the Escape key.
- Updated navbar HTML to support dropdown items with children, enhancing the navigation experience.
- Adjusted core script imports to include the new dropdown functionality.

* chore: update menu identifiers and add missing translations for development versions

* chore: update hugo stats

* chore: update script name

* chore: update menu item names to include arrows for external links

layouts/_partials/scripts/core.html

@@ -2,12 +2,13 @@
 {{- $jsMenu := resources.Get "js/menu.js" -}}
 {{- $jsTabs := resources.Get "js/tabs.js" -}}
 {{- $jsLang := resources.Get "js/lang.js" -}}
+{{- $jsNavMenu := resources.Get "js/nav-menu.js" -}}
 {{- $jsCodeCopy := resources.Get "js/code-copy.js" -}}
 {{- $jsFileTree := resources.Get "js/filetree.js" -}}
 {{- $jsSidebar := resources.Get "js/sidebar.js" -}}
 {{- $jsBackToTop := resources.Get "js/back-to-top.js" -}}
 
-{{- $scripts := slice $jsTheme $jsMenu $jsCodeCopy $jsTabs $jsLang $jsFileTree $jsSidebar $jsBackToTop | resources.Concat "js/main.js" -}}
+{{- $scripts := slice $jsTheme $jsMenu $jsCodeCopy $jsTabs $jsLang $jsNavMenu $jsFileTree $jsSidebar $jsBackToTop | resources.Concat "js/main.js" -}}
 {{- if hugo.IsProduction -}}
   {{- $scripts = $scripts | minify | fingerprint -}}
 {{- end -}}