Add filter into ajax_handler processor

Hey, Mike, how are you doing?

I have one small request to add filter function into your good plugin. This is inside of Plugin.php line 111:

Diffs are next:

--- a/web/wp-content/plugins/sidebar-login/src/Plugin.php
+++ b/web/wp-content/plugins/sidebar-login/src/Plugin.php
@@ -108,7 +108,7 @@ class Plugin {
                        $secure_cookie = true;
                }

-               $user = wp_signon( $credentials, $secure_cookie );
+               $user = wp_signon( apply_filters('sidebar_login_signon_credentials', $credentials), $secure_cookie );

                if ( $secure_cookie && strstr( $redirect_to, 'wp-admin' ) ) {
                        $redirect_to = str_replace( 'http:', 'https:', $redirect_to );

Thanks in advance