Adding a button type to joomla plugin xml config

I have created a joomla plugin and added 2 fields in xml file with the below code. I want to add a button type. As I don't find the button type in joomla, how to achieve this? I am using Joomla v4.

             <fieldset name="basic">
                 <field
						name="email"
						type="text"
						filter="raw"
						default=""
						label="PLG_EDITORS-XTD_XXX_FIELD_EMAIL"
						description="Enter your XXX Email"
						size="50"/>
				<field
						name="password"
						type="password"
						label="PLG_EDITORS-XTD_XXX_FIELD_PASSWORD"
						description="Enter the password"
						maxlength="25"
						size="30"/>
			</fieldset>

Please refer the screenshot for better clarity on what I was looking for.

You need to build a custom field type, store it in your plugin and load it in your plugin's XML file.

Take a look at plugins/system/stats plugin. It defines the custom field type data like this:

			<fieldset name="basic" addfieldprefix="Joomla\Plugin\System\Stats\Field">
				<field
					name="data"
					type="data"
					label=""
				/>
			</fieldset>

The data field is stored in plugins/system/stats/src/Field/DataField.php, the final HTML is rendered from the layout plugins/system/stats/layouts/field/data.php. In your case, your custom field type's layout is the one rendering the login button.

1. Add a field for the Login button, the field will be custom type, lets name it loginbtn:

         <fieldset name="basic" addfieldprefix="Joomla\Plugin\<Your plugin group>\<Your plugin name>\Field">
             <field
                    name="email"
                    type="text"
                    filter="raw"
                    default=""
                    label="PLG_EDITORS-XTD_XXX_FIELD_EMAIL"
                    description="Enter your XXX Email"
                    size="50"/>
            <field
                    name="password"
                    type="password"
                    label="PLG_EDITORS-XTD_XXX_FIELD_LOGINBTN"
                    description="Login"/>
        </fieldset>
   

2. Create a file, Loginbtn.php in plugins/< Your plugin group >/< Your plugin name >/src/Field

Loginbtn.php code:

<?php
defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Form\FormField;

class JFormFieldLoginbtn extends FormField
{
	protected $type = 'loginbtn';

	protected function getInput()
    {
        $html = '<input type="submit" name="submit" id="submit" class="your btn class" />';

		return $html;
	}

	public function getLabel() {
		return '<span style="text-decoration: underline;">' . parent::getLabel() . '</span>';
	}
}

4. Add a folder for Field in plugin's xml <files>
   < folder >field< /folder >