🔨 Update build/CI scripts

buildroot/bin/restore_configs

@@ -1,5 +1,11 @@
 #!/usr/bin/env bash
 
-git checkout Marlin/Configuration*.h 2>/dev/null
-git checkout Marlin/src/pins/ramps/pins_RAMPS.h 2>/dev/null
 rm -f Marlin/_Bootscreen.h Marlin/_Statusscreen.h marlin_config.json .pio/build/mc.zip
+
+if [[ $1 == '-d' || $1 == '--default' ]]; then
+  use_example_configs
+else
+  git checkout Marlin/Configuration.h 2>/dev/null
+  git checkout Marlin/Configuration_adv.h 2>/dev/null
+  git checkout Marlin/src/pins/ramps/pins_RAMPS.h 2>/dev/null
+fi