support before and after fill

Author: liutao

src/Data.php

@@ -53,6 +53,7 @@ public static function from($data): static
      */
     public function fill(array $data): static
     {
+        $this->beforeFill($data);
         if (empty($data)) {
             return $this;
         }
@@ -90,6 +91,7 @@ public function fill(array $data): static
                 }
             }
         }
+        $this->afterFill($data);
         return $this;
     }
 
@@ -172,4 +174,8 @@ protected function isArrayAble($data): bool
     {
         return $data instanceof ArrayAble || is_object($data) && method_exists($data, 'toArray');
     }
+
+    protected function beforeFill(array $data): void {}
+
+    protected function afterFill(array $data) {}
 }