[FEATURE] Add vaccination status to list of qualifications

**What needs to be added**
Ability to add vaccination status for users

**How should it be added**
Qualifications are required for all permission groups and should be moved outside coach
Fields should be changed to `verified` and `expiry`

No files or tests are named. Start by tracing how qualifications are represented and how permission groups currently use coach qualifications; done means users can have vaccination status, qualifications apply to every permission group, and the fields are named verified and expiry.

Written by the indexing model from the issue text.