Add redis support for connecting to target

[UpperM]

Is your feature request related to a problem? Please describe.
Need to connect directly to a redis instance with redis-cli (like postgres).

Describe the solution you'd like

boundary connect redis -target-name=my-redis-instance -target-scope-name=foo

Describe alternatives you've considered
Currently we run boundary in tunnel then use redis-cli to connect locally

Explain any additional use-cases
None

Additional context
I can make a PR for adding this feature.

[achetronic]

Hey @UpperM you can craft it yourself by performing an authorized-session and then connect with the result.

I crafted an alternative CLI that covers browser (not included in Boundary CLI) and kubernetes in a different way than upstream. It works and we use it in production, so you can inspect my code and know how to do it

Are you willing to contribute in bbb ? :)