new: add `duplicate` button for articles

resources/views/components/save.blade.php

@@ -1,5 +1,6 @@
 @php
     $cancelUrl = $cancel_url ?? $cancelUrl ?? null;
+    $duplicateUrl = $duplicate_url ?? $duplicateUrl ?? null;
 @endphp
 
 @push('header-actions')
@@ -8,6 +9,12 @@
             'class' => 'btn-sm mr-2',
             'url' => $cancelUrl,
         ])
+        @if($duplicateUrl)
+            @include('components.form.buttons.button-duplicate', [
+                'class' => 'btn-sm mr-2',
+                'duplicate_url' => $duplicateUrl,
+            ])
+        @endif
         @include('components.form.buttons.button-save', [
             'class' => 'btn-sm',
         ])
@@ -18,6 +25,9 @@
 	<div class="col-12">
 		<div class="text-right form-buttons">
 			@include('components.form.buttons.button-cancel', ['url' => $cancelUrl])
+            @if($duplicateUrl)
+                @include('components.form.buttons.button-duplicate', ['duplicate_url' => $duplicateUrl])
+            @endif
 			@include('components.form.buttons.button-save')
 		</div>
 	</div>