chore: add changeset for error handler

.changeset/eight-radios-bow.md

@@ -0,0 +1,7 @@
+---
+'nest-commander': minor
+---
+
+Add ability to use error handler for commander errors
+
+Within the `CommandFactory.run()` now as a second parameter you can either keep passing just the logger, or you can pass in an object with the logger and an `errorHandler`. Ths `errorHandler` is a method that takes in an `Error` and returns `void`. The errorHandler will be passed to commander's `exitOverride` method, if it exists. This is useful for better handling errors and giving the dev more control over what is seen. There is also no longer an `unhandledPromiseRejection` on empty commands.