[Companion] Add optional logging of all debug output. (#4974)

* [AppDebugMessageHandler] Add ability to write debug output to any number of QIODevices.

* [Simulator][DebugOutput] Use new QIODevice hook in AppDebugMessageHandler instead of signal/slot.

* [AppData] Add new settings for debug logging; Refactor property creation macro to work with any data type and add varName_init() method to set default; Refactor all boolean settings to use new macro (others to be migrated later).

* [AppPreferencesDialog] Add UI for appDebugLog, fwTraceLog, & appLogsDir settings; Clean up layout on application prefs. tab, move and re-label a couple items.

* [Companion][Simulator] Enable optional application debug output logging.

* [Simulator] Enable optional logging of firmware debug output to file.

* [EEPROMInterface] Use qDebug() instead of std::cout so that now all debug output can be routed via custom message handler/logger.

* [Companion][Simulator] Add missing #include.

companion/src/appdebugmessagehandler.h

@@ -26,6 +26,7 @@
 
 #include <QApplication>
 #include <QDebug>
+#include <QIODevice>
 #include <QMessageLogContext>
 #include <QObject>
 #include <QRegularExpression>
@@ -94,7 +95,7 @@
   #else
     #define qInfo      qDebug
   #endif
-  #define QtInfoMsg    4
+  #define QtInfoMsg    QtMsgType(4)
 #endif
 
 class AppDebugMessageHandler : public QObject
@@ -110,6 +111,8 @@ class AppDebugMessageHandler : public QObject
     void setAppDebugOutputLevel(const quint8 & appDebugOutputLevel);
     void setShowSourcePath(bool showSourcePath);
     void setShowFunctionDeclarations(bool showFunctionDeclarations);
+    void addOutputDevice(QIODevice * device);
+    void removeOutputDevice(QIODevice * device);
 
     void installAppMessageHandler();
     void messageHandler(QtMsgType type, const QMessageLogContext & context, const QString & msg);
@@ -123,6 +126,7 @@ class AppDebugMessageHandler : public QObject
     QRegularExpression m_srcPathFilter;
     QRegularExpression m_functionFilter;
     quint8 m_appDebugOutputLevel;
+    QVector<QIODevice *> m_outputDevices;
     bool m_showSourcePath;
     bool m_showFunctionDeclarations;