Permission Manager

Add permission manager from Itinerary so that Android permissions can be checked.

Note at the moment the request permission functions are not hooked up so on Android the permission will need to be manually set on. I'll hook this up later but I wanted to confirm my suspicion on notifications being the current cause of crashes.

src/notificationsmanager.cpp

@@ -23,6 +23,7 @@
 #include "controller.h"
 #include "neochatconnection.h"
 #include "neochatroom.h"
+#include "permissionmanager.h"
 #include "roommanager.h"
 #include "texthandler.h"
 #include "windowcontroller.h"
@@ -42,6 +43,10 @@ NotificationsManager::NotificationsManager(QObject *parent)
 
 void NotificationsManager::handleNotifications(QPointer<NeoChatConnection> connection)
 {
+    if (!PermissionManager::instance().checkPermission(Permission::PostNotification)) {
+        return;
+    }
+
     if (!m_connActiveJob.contains(connection->user()->id())) {
         auto job = connection->callApi<GetNotificationsJob>();
         m_connActiveJob.append(connection->user()->id());