Added Delete block!

Currently only on web, because gdevelop says i have 0 out of 2 builds today(even i only used it once today)

Hold B to and delete a lot of blocks you want to delete.

It is just sometimes, when you have a lot of small blocks and want to delete them all, you have to do it with your cursor.

And the process is really slow!

So i made this delete block...

Join my discord server if you want: https://discord.gg/tY53pjaGBg