Merged in feat/SW-1711-switch-icons (pull request #1558)

Switches out all the old icons to new ones, and moves them to the design system. The new icons are of three different types: Materialise Symbol, Nucleo, and Customized. Also adds further mapping between facilities/amenities and icons.

Approved-by: Michael Zetterberg
Approved-by: Erik Tiekstra

apps/scandic-web/components/DatePicker/Single/Mobile.tsx

@@ -2,6 +2,8 @@
 import { DayPicker } from "react-day-picker"
 import { useIntl } from "react-intl"
 
+import { MaterialIcon } from "@scandic-hotels/design-system/Icons"
+
 import { Lang } from "@/constants/languages"
 import { dt } from "@/lib/dt"