Implement Editor Level ID API to simplify managing level data

[Hbg1010]

It's probably a good idea to implement Editor Level ID API into this mod at least for it's local backend. I've noticed when I do things such as changing a level's name, the tracker tends to treat the level as a new level entirely. This would also allow levels to share names while having different trackers! It's a great API def worth looking into.

[ggodpl]

thanks for the suggestion! I had this planned for the next update along with #5, but I'm not sure when I'll be able to finish and publish it