Start working on a simple graphical font editor.

Editing fonts by editing text files is really slow and boring.
A simple font editor seems like a good way to take LibGUI for a spin.

FontEditor/main.cpp

@@ -0,0 +1,20 @@
+#include "FontEditor.h"
+#include <LibGUI/GEventLoop.h>
+#include <LibGUI/GWindow.h>
+#include <stdio.h>
+
+int main(int argc, char** argv)
+{
+    (void) argc;
+    (void) argv;
+
+    GEventLoop loop;
+    auto* window = new GWindow;
+    window->set_title("FontEditor");
+    window->set_rect({ 50, 50, 420, 200 });
+    auto* font_editor = new FontEditorWidget;
+    font_editor->set_relative_rect({ 0, 0, 420, 200 });
+    window->set_main_widget(font_editor);
+    window->show();
+    return loop.exec();
+}