Implement and test execute from file method

src/Connection/MysqliConnection.php

@@ -437,6 +437,28 @@ public function inTransaction()
         return $this->transaction_level > 0;
     }
 
+    /**
+     * @param string $file_path
+     */
+    public function executeFromFile($file_path)
+    {
+        if (!is_file($file_path)) {
+            throw new RuntimeException('File not found');
+        }
+
+        if ($this->link->multi_query(file_get_contents($file_path))) {
+            do {
+                if ($result = $this->link->store_result()) {
+                    $result->free();
+                }
+
+                if (!$this->link->more_results()) {
+                    break;
+                }
+            } while ($this->link->next_result());
+        }
+    }
+
     /**
      * {@inheritdoc}
      */

src/ConnectionInterface.php

@@ -260,6 +260,11 @@ public function rollback();
      */
     public function inTransaction();
 
+    /**
+     * @param string $file_path
+     */
+    public function executeFromFile($file_path);
+
     /**
      * @param  string $database_name
      * @return bool