Update new GUI.

- Add font
- first step to update main menu Ui
- replace button with a subscene
- add props textures
- write a new resolution default
- actvate HDPI

assets/ui/summary/UI_footer_summary.tscn

@@ -0,0 +1,22 @@
+[gd_scene format=2]
+
+[node name="VBoxContainer" type="VBoxContainer"]
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+margin_top = -38.0
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="ButtonQuit" type="Button" parent="."]
+margin_right = 1440.0
+margin_bottom = 20.0
+text = "Quitter"
+
+[node name="Label" type="Label" parent="."]
+margin_top = 24.0
+margin_right = 1440.0
+margin_bottom = 38.0
+text = "v XX.XX"
+align = 2