Add a numeric field element

Using a "number" field isn't ideal for all types of numeric-based input:

I would like to add a "numeric" field type in Helper that would help support this:

    $form['account_number'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Account Number'),
      '#size' => 15,
      '#maxlength' => 15,
      '#attributes' => [
        'inputmode' => 'numeric',
        'pattern' => '[0-9]*',
      ],
      '#element_validate' => [
        [Number::class, 'validateNumber'],
      ],
    ];