Sorting: Started sort set routes and form

app/Sorting/SortSetController.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace BookStack\Sorting;
+
+use BookStack\Http\Controller;
+
+class SortSetController extends Controller
+{
+    public function __construct()
+    {
+        $this->middleware('can:settings-manage');
+        // TODO - Test
+    }
+
+    public function create()
+    {
+        return view('settings.sort-sets.create');
+    }
+}

app/Sorting/SortSetOption.php

@@ -13,4 +13,32 @@ enum SortSetOption: string
     case UpdateDateDesc = 'updated_date_desc';
     case ChaptersFirst = 'chapters_first';
     case ChaptersLast = 'chapters_last';
+
+    /**
+     * Provide a translated label string for this option.
+     */
+    public function getLabel(): string
+    {
+        $key = $this->value;
+        $label = '';
+        if (str_ends_with($key, '_asc')) {
+            $key = substr($key, 0, -4);
+            $label = trans('settings.sort_set_op_asc');
+        } elseif (str_ends_with($key, '_desc')) {
+            $key = substr($key, 0, -5);
+            $label = trans('settings.sort_set_op_desc');
+        }
+
+        $label = trans('settings.sort_set_op_' . $key) . ' ' . $label;
+        return trim($label);
+    }
+
+    /**
+     * @return SortSetOption[]
+     */
+    public static function allExcluding(array $options): array
+    {
+        $all = SortSetOption::cases();
+        return array_diff($all, $options);
+    }
 }