Feature/CEC detection (#877)

* Add CEC functionality

* Initial commit

* removed libCEC from the system skip list

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

include/cec/CECEvent.h

@@ -0,0 +1,8 @@
+#pragma once
+
+enum class CECEvent
+{
+        On,
+        Off
+};
+

include/cec/CECHandler.h

@@ -0,0 +1,69 @@
+#pragma once
+
+#include <QObject>
+#include <QVector>
+
+#include <iostream>
+
+#include <libcec/cec.h>
+
+#include <cec/CECEvent.h>
+
+using CECCallbacks         = CEC::ICECCallbacks;
+using CECAdapter           = CEC::ICECAdapter;
+using CECAdapterDescriptor = CEC::cec_adapter_descriptor;
+using CECLogMessage        = CEC::cec_log_message;
+using CECKeyPress          = CEC::cec_keypress;
+using CECCommand           = CEC::cec_command;
+using CECLogicalAddress    = CEC::cec_logical_address;
+using CECLogicalAddresses  = CEC::cec_logical_addresses;
+using CECMenuState         = CEC::cec_menu_state;
+using CECPowerStatus       = CEC::cec_power_status;
+using CECVendorId          = CEC::cec_vendor_id;
+using CECParameter         = CEC::libcec_parameter;
+using CECConfig            = CEC::libcec_configuration;
+using CECAlert             = CEC::libcec_alert;
+
+class Logger;
+
+class CECHandler : public QObject
+{
+	Q_OBJECT
+public:
+	CECHandler();
+	~CECHandler() override;
+
+	QString scan() const;
+
+public slots:
+	bool start();
+	void stop();
+
+signals:
+	void cecEvent(CECEvent event);
+
+private:
+	/* CEC Callbacks */
+	static void onCecLogMessage           (void * context, const CECLogMessage * message);
+	static void onCecKeyPress             (void * context, const CECKeyPress * key);
+	static void onCecAlert                (void * context, const CECAlert alert, const CECParameter data);
+	static void onCecConfigurationChanged (void * context, const CECConfig * configuration);
+	static void onCecCommandReceived      (void * context, const CECCommand * command);
+	static void onCecSourceActivated      (void * context, const CECLogicalAddress address, const uint8_t activated);
+	static int  onCecMenuStateChanged     (void * context, const CECMenuState state);
+
+	/* CEC Adapter helpers */
+	QVector<CECAdapterDescriptor> getAdapters() const;
+	bool openAdapter(const CECAdapterDescriptor & descriptor);
+	void printAdapter(const CECAdapterDescriptor & descriptor) const;
+
+	/* CEC Helpers */
+	CECCallbacks getCallbacks() const;
+	CECConfig getConfig() const;
+
+	CECAdapter * _cecAdapter   {};
+	CECCallbacks _cecCallbacks {};
+	CECConfig    _cecConfig    {};
+
+	Logger * _logger {};
+};