I want to create a fairly basic event system in Godot that functions similarly to the one in RPG Maker. However, I have no idea where to start, as I'm still pretty new to Godot. Are there existing libraries to help with this? If not, where should I start?

Maybe you can use a AnimationPlayer node? You could move the Camera2D around, enable/disable player input (by exposing a boolean the player script), make Label nodes visible or invisible to show dialog (or make a dialog system you can call from the AnimationPlayer), and play sounds using AudioStreamPlayer and/or AudioStreamPlayer2D.

I’m not sure how easy or hard it would be though.

4 years later