Introduce Event Services (#1653)

* Allow to enable/disable suspend & lock event handling

* Fix Windows

* Refactor event handling incl.CEC

* Revert "Auxiliary commit to revert individual files from 0d9a8b8a3a4a09609a339f54c7d8a9384c561282"

This reverts commit 80737d926ad151a07b2493dd1685ed502975cb2e.

* Support Events for Grabbers generically

* Have CECEvent to actions configurable, further clean-ups

* Remove handleEvent from V4L2grabber, as grabber will be stopped on suspend

* Validate that one CEC Event can only trigger one action

* MacOS lock/unlock added

* fast windows fix

* Corrections

* Fix CodeQL findings

* add macos lock/unlock handler

* Migration of CEC-config and have default actions

* Correct target_link_libraries

* Include Foundation

* macOS include AppKit

* Support Scheduled Events, cleanups.

* Fix destructing

* Fix coredump during free

* Consider additional error sceanrio

* Fix missing code

* install desktop icons

* correct bash logic

---------

Co-authored-by: Paulchen-Panther <16664240+Paulchen-Panther@users.noreply.github.com>

include/events/EventScheduler.h

@@ -0,0 +1,55 @@
+#ifndef EVENTSCHEDULER_H
+#define EVENTSCHEDULER_H
+#include <QObject>
+#include <QJsonDocument>
+#include <QTime>
+#include <QTimer>
+
+#include <events/EventEnum.h>
+#include <utils/settings.h>
+
+class Logger;
+
+class EventScheduler : public QObject
+{
+	Q_OBJECT
+
+public:
+	EventScheduler();
+	~EventScheduler() override;
+
+	virtual void handleSettingsUpdate(settings::type type, const QJsonDocument& config);
+
+signals:
+	void signalEvent(Event event);
+
+private slots:
+
+	void handleEvent(int timerIndex);
+
+private:
+
+	struct timeEvent
+	{
+		QTime time;
+		Event action;
+	};
+
+	bool enable();
+	void disable();
+
+	int getMillisecondsToNextScheduledTime(const QTime& time);
+
+	void clearTimers();
+
+	QJsonDocument _config;
+
+	bool _isEnabled;
+
+	QList<timeEvent> _scheduledEvents;
+	QList<QTimer*> _timers;
+
+	Logger * _log {};
+};
+
+#endif // EVENTSCHEDULER_H