keep the flags folder

Author: Jason2866

tools/archive-build.sh

@@ -61,7 +61,7 @@ mv arduino-esp32/ framework-arduinoespressif32/
 cd framework-arduinoespressif32/libraries
 rm -rf **/examples
 cd ../tools/esp32-arduino-libs
-rm -rf **/flags
+# rm -rf **/flags
 cd ../../../
 # If the framework is needed as tar.gz uncomment next line
 # tar --exclude=.* -zcf ../$pio_archive_path framework-arduinoespressif32/