支持ultimatemember的注册登录表单

[zx900930]

可用的hooks如下:
https://docs.ultimatemember.com/article/1324-hooks-list
需要重写6个function

add_action( 'um_after_login_fields', 'um_micaptcha_login');
add_action( 'um_submit_form_errors_hook', 'um_micaptcha_login_validate');
add_action( 'um_after_register_fields', 'um_micaptcha_register');
add_action( 'um_submit_form_errors_hook', 'um_micaptcha_register_validate');
add_action( 'um_after_password_reset_fields', 'um_micaptcha_lostpassword');
add_action( 'um_reset_password_errors_hook', 'um_micaptcha_reset_password_validate');