Add supplemental data to localized term objects ...

Fixes #3008
Closes #3011
Co-authored-by: edalzell <erin@thedalzells.org>

Author: jasonvarga

src/Taxonomies/AugmentedTerm.php

@@ -9,6 +9,7 @@ class AugmentedTerm extends AbstractAugmented
     public function keys()
     {
         return $this->data->values()->keys()
+            ->merge($this->data->supplements()->keys())
             ->merge($this->commonKeys())
             ->merge($this->blueprintFields()->keys())
             ->unique()->sort()->values()->all();

src/Taxonomies/LocalizedTerm.php

@@ -9,6 +9,7 @@
 use Statamic\Contracts\Data\Augmentable;
 use Statamic\Contracts\Data\Augmented;
 use Statamic\Contracts\Taxonomies\Term;
+use Statamic\Data\ContainsSupplementalData;
 use Statamic\Data\HasAugmentedInstance;
 use Statamic\Data\Publishable;
 use Statamic\Data\TracksLastModified;
@@ -22,7 +23,7 @@
 
 class LocalizedTerm implements Term, Responsable, Augmentable, Protectable
 {
-    use Revisable, Routable, Publishable, HasAugmentedInstance, TracksQueriedColumns, TracksLastModified;
+    use Revisable, Routable, Publishable, HasAugmentedInstance, TracksQueriedColumns, TracksLastModified, ContainsSupplementalData;
 
     protected $locale;
     protected $term;
@@ -31,6 +32,7 @@ public function __construct($term, $locale)
     {
         $this->term = $term;
         $this->locale = $locale;
+        $this->supplements = collect();
     }
 
     public function get($key, $fallback = null)