The Witness: Add Fast Travel Option

[NewSoupVi]

It's just a toggle option that gets added to slot data (which happens automatically for my options :D).

The important stuff is in the client. This is the new release that supports this feature: https://github.com/NewSoupVi/The-Witness-Randomizer-for-Archipelago/releases/tag/v7.0.0p5

Also rename "Swamp Near Platform" to "Swamp Platform" because that's a better name for where the warp goes