discovery: sanitize dtos to entities before repository write

[jd2rogers2]

This ticket may simply require making sure that the data returned by back end doesn't return sensitive data like passwords, etc.

reference -> #92 (comment)

https://automapperts.netlify.app/docs/introduction/what-why/
needs a bit of research
not sure i see the downside of writing the DTO object (which already has it's shape enforced by the DTO (used at runtime))
but worth a look

if so clean up of all services needed

Acceptance criteria:

• Scope limited to account controller
• password and/or other sensitive data is not returned in results
• controller should return an instance of a dto class. You could approach this by using the automation that class-transformer provides in this example https://salwoch.hashnode.dev/how-to-serialize-responses-in-nestjs . If you go in this route, use the existing returnDtos instead of the entities
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