This scope lets an app "Manage public channels that your slack app has been added to and create new ones"
This OAuth permission scope works with these Web API methods.
channels.archive- Archives a channel.
channels.create- Creates a channel.
channels.invite- Invites a user to a channel.
channels.kick- Removes a user from a channel.
channels.leave- Leaves a channel.
channels.mark- Sets the read cursor in a channel.
channels.rename- Renames a channel.
channels.setPurpose- Sets the purpose for a channel.
channels.setTopic- Sets the topic for a channel.