save rosters in localStorage, better mobile support for 10th edition, add tailwind

tailwind.config.js

@@ -0,0 +1,8 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+	content: ["./index.html", "./src/**/*.{js,ts,jsx,tsx}"],
+	theme: {
+		extend: {},
+	},
+	plugins: [],
+};