I have finally gone back and re-made this into a normal plugin!
This no longer requires Skript (because its not a skript plugin anymore!)
I have also added some features:
+ Change all messages in the config
+ Added some checks to make sure people don't use the push thing to get to places they are not supposed to
+ Allows you to disable the push thing when someone breaks/places a block.
Added an option to have building disabled when the plugin in loaded
Also /build can not be completely disabled, you can still disable building, but not enable it.
Added a config (open the anti-build.sk)
Added comments to see what the current 1 thing in the config does
Added an option to disable the /build command
Thats it! Request more features in the Discussion tab.