Update 1.004 - Stage Type Filter

As of the October 2nd, 2021 update for the Arknights Randomizer, I've added four toggleable filter options for the stages.

📕Main Story, 📘Intermezzi, 📗Side Story, and 🛍️Supplies are now toggles you can use to filter out specific types for the randomizer pool.

With that said, stages from Darknights Memoir, Grani and the Knights' Treasure, Heart of Surging Flame, and Code of Brawl's stages have been added to the random pool.

Have fun, Doctors!