Add new text fields to content type programmatically from CSV file

/**
* Add new fields.
*/
function MYMODULE_update_10000() {
 $content_type = 'article';
 $csv_file_path = DRUPAL_ROOT . '/_profile_fields.csv';
 
 $node_type = NodeType::load($content_type);
 if (!$node_type) {
   throw new \Exception("COntent type '$content_type' not found.");
 }
 
 if (!file_exists($csv_file_path)) {
   throw new \Exception("CSV file not found $csv_file_path.");
 }
 
 $fields = [];
 if (($handle = fopen($csv_file_path, 'rb')) !== FALSE) {
   $header = fgetcsv($handle, NULL, '|');
   while (($data = fgetcsv($handle, NULL, '|')) !== FALSE) {
     $fields[] = array_combine($header, $data);
   }
   fclose($handle);
 }
 
 foreach ($fields as $field) {
   $field_name = $field['machine_name'];
   $label = $field['label'];
   $description = $field['description'];
   $existing_field = FieldStorageConfig::loadByName('node', $field_name);
   if (!$existing_field) {
     FieldStorageConfig::create([
       'field_name' => strtolower($field_name),
       'entity_type' => 'node',
       'type' => 'string',
       'settings' => [
         'max_length' => 255,
       ],
     ])->save();
   }
   
   $field_instance = FieldConfig::loadByName('node', $content_type, $field_name);
   if (!$field_instance) {
     FieldConfig::create([
       'field_name' => strtolower($field_name),
       'entity_type' => 'node',
       'bundle' => $content_type,
       'label' => $label,
       'description' => $description,
       'required' => FALSE,
     ])->save();
   }
   
   \Drupal::service('entity_display.repository')->getFormDisplay('node', $content_type)
     ->setComponent($field_name, [
       'type' => 'string_textfield',
       'weight' => 0,
     ])
     ->save();
     
   \Drupal::service('entity_display.repository')->getViewDisplay('node', $content_type)
     ->setComponent($field_name, [
       'label' => 'above',
       'type' => 'string',
       'weight' => 0,
     ])
     ->save();
 }
}