Severons Customizable Endless

Adds a customizable endless mode to the end of the endless page that includes:

Included Regions Excluded Sub Regions (All can be excluded but you might softlock yourself. I haven't tested all of the combinations.) Starting artifacts (pick one, don't be greedy. Or not. Whatever you want.) Starting items (Flashlight, Flaregun, Handgun) Starting experimental perks (only ones that are not timed and not item perks)

Credit to the person who made Endless Service Shaft, I read their source code and it gave me my head start on making the button and game mode and such.

Planned additions once this is more than just a customizable endless mod:

Harder Mode A few bindings and trinkets Wizard Mode (heheheh)

My discord is severon_the_dragon, I'm pretty sure.