[gnome-builder] libide-gui: add images for preferences window

[Christian Hergert <chergert src gnome org>]

commit dfdbbb1c92f2a5be2f6da13d29268af77ad88368
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 11 17:58:57 2022 -0700

    libide-gui: add images for preferences window

 src/libide/gui/images/style-preview-dark.png    | Bin 0 -> 56178 bytes
 src/libide/gui/images/style-preview-default.png | Bin 0 -> 64441 bytes
 src/libide/gui/images/style-preview-light.png   | Bin 0 -> 60807 bytes
 src/libide/gui/libide-gui.gresource.xml         |   3 +++
 4 files changed, 3 insertions(+)
---
diff --git a/src/libide/gui/images/style-preview-dark.png b/src/libide/gui/images/style-preview-dark.png
new file mode 100644
index 000000000..44515ae09
Binary files /dev/null and b/src/libide/gui/images/style-preview-dark.png differ
diff --git a/src/libide/gui/images/style-preview-default.png b/src/libide/gui/images/style-preview-default.png
new file mode 100644
index 000000000..6ad011597
Binary files /dev/null and b/src/libide/gui/images/style-preview-default.png differ
diff --git a/src/libide/gui/images/style-preview-light.png b/src/libide/gui/images/style-preview-light.png
new file mode 100644
index 000000000..d887e4e22
Binary files /dev/null and b/src/libide/gui/images/style-preview-light.png differ
diff --git a/src/libide/gui/libide-gui.gresource.xml b/src/libide/gui/libide-gui.gresource.xml
index 35e623849..78a1f0a38 100644
--- a/src/libide/gui/libide-gui.gresource.xml
+++ b/src/libide/gui/libide-gui.gresource.xml
@@ -2,6 +2,9 @@
 <gresources>
   <gresource prefix="/org/gnome/libide-gui">
     <file preprocess="xml-stripblanks">gtk/menus.ui</file>
+    <file>images/style-preview-dark.png</file>
+    <file>images/style-preview-default.png</file>
+    <file>images/style-preview-light.png</file>
   </gresource>
   <gresource prefix="/org/gnome/libide-gui/ui">
     <file preprocess="xml-stripblanks">ide-environment-editor-row.ui</file>