feat: SSH Tunnel support for all target-sql targets

[visch]

Feature scope

Targets (data type handling, batching, SQL object generation, etc.)

Description

We have an implementation here https://github.com/MeltanoLabs/tap-postgres/pull/94 that should be generic enough for every sql based target with sqlalchemy. We'd have to polish this implementation up a bit most likely but the general idea seems good to me!

[visch]

Another implementation here https://github.com/MeltanoLabs/tap-mysql/pull/6