clean marlin 2.0.x-bugfix

buildroot/bin/env_backup

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+[ -z "$1" ] || cd $1
+
+if [ -d ".test" ]; then
+  printf "\033[0;31mEnvironment backup already exists!\033[0m\n"
+else
+  mkdir .test
+  cp Marlin/Configuration*.h .test/
+  [ -f Marlin/_Bootscreen.h ] && cp Marlin/_Bootscreen.h .test/
+  [ -f Marlin/_Statusscreen.h ] && cp Marlin/_Statusscreen.h .test/
+  cp -r Marlin/src/pins .test/pins
+  printf "\033[0;32mEnvironment Backup created\033[0m\n"
+fi