Add Field::validate().

Signed-off-by: Mior Muhammad Zaki <crynobone@gmail.com>

src/Orderable.php

@@ -2,7 +2,7 @@
 
 namespace Laravie\QueryFilter;
 
-use Orchestra\Support\Str;
+use Illuminate\Support\Str;
 
 class Orderable
 {

src/Value/Field.php

@@ -6,6 +6,20 @@
 
 class Field extends Column
 {
+    /**
+     * Validate column.
+     *
+     * @return bool
+     */
+    public function validate(): bool
+    {
+        if ($this->isRelationSelector() || $this->isJsonPathSelector()) {
+            return true;
+        }
+
+        return parent::validate();
+    }
+
     /**
      * Is relation selector.
      *