Consider breaking out connection string fields when connecting to a db (dataset UI)

[allisonking]

Is your feature request related to a specific problem?

Right now there is one input box for a database connection string. It would be nice if this box were broken up into fields so users did not have to compose their own connection string.

Describe the solution you'd like

Some investigation is needed into what fields all the different database types need, but probably fields for user, database name, port, etc. Then either the frontend or the backend would have to piece those parts together into a proper connection string depending on the database flavor.

Describe alternatives you've considered, if any

Leaving just one field for a connection string. Will probably be good for our first pass, but having more fields might be a nicer experience.

Additional context

https://github.com/ethyca/fides/pull/834#discussion_r915156159