Remove appbase as an external dependency.

lib/appbase/main.cpp

@@ -0,0 +1,31 @@
+#include <QApplication>
+#include <QDebug>
+#include <QDir>
+#include <QStandardPaths>
+
+#include "ABSettings.hpp"
+#include "ABTheme.hpp"
+#include "singletons/Fonts.hpp"
+#include "widgets/BaseWindow.hpp"
+
+int main(int argc, char *argv[])
+{
+    using namespace AB_NAMESPACE;
+
+    QApplication a(argc, argv);
+
+    auto path =
+        QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
+    qDebug() << path;
+
+    QDir(path).mkdir(".");
+
+    new Settings(path);
+    new Fonts();
+
+    BaseWindow widget(nullptr, BaseWindow::EnableCustomFrame);
+    widget.setWindowTitle("asdf");
+    widget.show();
+
+    return a.exec();
+}