Allow vendors/employees/third-parties to manage their own experience schedules manually

This feature would allow third-parties who aren't store staff to log in to a website and manage their availability (and perhaps experience details such as the info and price) without being able to log into the store or see other experiences. Basic functionality might be: - create/manage business profiles - create/manage experiences with descriptions, pricing, inventory, dates available - manage reservations including cancellations, rescheduling, and refunds