feat: add optional hint/admonition icons (#383)

BREAKING CHANGE: The types of the `hint` short code have been renamed to `[note|tip|important|caution|warning]` the old types `[info|ok|warning|danger]` are still working, but should be considered as deprecated.

BREAKING CHANGE: The `hint` short code is using named arguments now. You have to change, e.g. `{{< hint warning >}}` to `{{< hint type=warning >}}`.

layouts/partials/menu-filetree.html

@@ -40,7 +40,6 @@
 
       {{ range $rangeBy }}
         {{ if not .Params.GeekdocHidden }}
-
           {{ $numberOfPages := (add (len .Pages) (len .Sections)) }}
           {{ $isParent := and (ne $numberOfPages 0) (not .Params.GeekdocFlatSection) }}
           {{ $isCurrent := eq $current . }}
@@ -61,7 +60,7 @@
             />
             <label
               {{ if $doCollapse }}
-                for="{{ printf "navtree-%s" $id }}" class="flex justify-between"
+                for="{{ printf "navtree-%s" $id }}" class="flex justify-between align-center"
               {{ end }}
             >
               {{ if or .Content .Params.GeekdocFlatSection }}