Adds a command handler. Dialogue will pause execution after the command is called.
public void AddCommandHandler(string commandName, Delegate handler)
When this command handler has been added, it can be called from your Yarn scripts like so:
<<commandName param1 param2>>
handleris a method that returns a
Coroutine, when the command is run, the DialogueRunner will wait for the returned coroutine to stop before delivering any more content.
The name of the command.