feat: new hook filter:user.logout

- used for setting "next" for post logout redirection

public/src/app.js

@@ -194,6 +194,11 @@ app.cacheBuster = null;
 
 					$(window).trigger('action:app.loggedOut', data);
 					if (data.next) {
+						if (data.next.startsWith('http')) {
+							window.location.href = data.next;
+							return;
+						}
+
 						ajaxify.go(data.next);
 					} else {
 						ajaxify.refresh();

src/controllers/authentication.js

@@ -498,10 +498,12 @@ authenticationController.logout = function (req, res, next) {
 						return res.status(500);
 					}
 
-					res.status(200).send({
+					payload = {
 						header: payload.header,
 						config: res.locals.config,
-					});
+					};
+					plugins.fireHook('filter:user.logout', payload);
+					res.status(200).send(payload);
 				});
 			}
 		},