Initial support for system monospace fonts.

app/monospacefontmanager.h

@@ -0,0 +1,15 @@
+#ifndef MONOSPACEFONTMANAGER_H
+#define MONOSPACEFONTMANAGER_H
+
+#include <QObject>
+#include <QFontDatabase>
+
+class MonospaceFontManager : public QObject
+{
+    Q_OBJECT
+public:
+    explicit MonospaceFontManager(QObject *parent = nullptr);
+    Q_INVOKABLE QStringList retrieveMonospaceFonts();
+};
+
+#endif // MONOSPACEFONTMANAGER_H