DEV Change Cost type and frontend for cost #389

Overview

This ticket is to add the type of occurrence in a cost. This would include Annually, Annual at a certain date, and one time cost. The things that would need to be changed for this ticket includes the cost type in the middleware, ensure cost endpoints have the frequency included, the frontend for adding a cost, and frontend for editing a cost.

Tasks

• Update CashflowCost to include a frequency
• Update/Ensure endpoints work with new CashflowCost field
• Update add cost frontend to include a frequency type
• Update cost edit to include frequency type

Acceptance Criteria

• All cost items now have a frequency field
• All things referencing cost objects are updated to reflect the changes