feat: add multiroom signup

apps/scandic-web/contexts/SelectRate/Room.ts

@@ -0,0 +1,13 @@
+import { createContext, useContext } from "react"
+
+import type { RoomContextValue } from "@/types/contexts/select-rate/room"
+
+export const RoomContext = createContext<RoomContextValue | null>(null)
+
+export function useRoomContext() {
+  const ctx = useContext(RoomContext)
+  if (!ctx) {
+    throw new Error("Missing context value [RoomContext]")
+  }
+  return ctx
+}