Swagger api call for onboarding on dashboard + new db table

[HiltonLuu]

1. Create a "get" swagger definition for the onboarding progress of a specific business user (This is going to include the schema)
2. build out the route on the express server to query the db for the user's progress relative to their progress
3. build out the onboarding table as a lookup table that only stores the 3 rows of dummy data

4. Pass back to front-end team

[HiltonLuu]

Dashboard API + new DB table for onboarding