Added auto insert option

In one of the extensions for this plugin, they were confused about how to add the actor after creating it again, so I added a param to add it immediately for ease of use.

Added Editor variable functionality

This is one of my oldest plugins now, so it doesn't have a functionality to use editor variables.
I took this chance to clean the code just a bit, so it won't be incompatible with new versions of InstanceActor. I created a bug while doing so and fixed it.

Demo and plugin are finished

1.0.0

Create FUNDING.yml