I just want to know that how to create a new folder where i can put all my commands separately.
You just have to name it like
commands/ban.js for a ban command.
commands/ is if you set your command handler to check for commands in the
Glitch currently does not have a folder system where you can open the folders, so you just have to do it like
foldername/filename.filetype and then you got a folder in glitch.