build: Generate addon.d script at build time

Signed-off-by: Paul Keith <javelinanddart@bestas.gr>

addond_tail

@@ -0,0 +1,29 @@
+EOF
+}
+
+case "$1" in
+  backup)
+    list_files | while read FILE DUMMY; do
+      backup_file $S/$FILE
+    done
+  ;;
+  restore)
+    list_files | while read FILE REPLACEMENT; do
+      R=""
+      [ -n "$REPLACEMENT" ] && R="$S/$REPLACEMENT"
+      [ -f "$C/$S/$FILE" ] && restore_file $S/$FILE $R
+    done
+  ;;
+  pre-backup)
+    # Stub
+  ;;
+  post-backup)
+    # Stub
+  ;;
+  pre-restore)
+    # Stub
+  ;;
+  post-restore)
+    # Stub
+  ;;
+esac