feat: project delete

[jonaro00]

Description of change

• CLI command
• Gateway endpoint
• Handle checks for deployment and databases linked
• Handle deletion of container and volume
• Delete record from gateway DB
• (do this for later release) "soft delete" a.k.a. perform the deletion of cont+vol but don't give up the name. good for "hard resets". I imagine "project start" will become "project claim" in the future. This makes sense at that point.
• TESTING....
• Remove CI comment

How has this been tested? (if applicable)

Tested locally with only with a rocket postgres app.
Deletion works while building a deployment.
The deletion isn't fully atomic, but it should be good enough.

[oddgrd]

Awesome! I left a few comments, but this seems very close!

[oddgrd]

Could we also expand some of the gateway integration tests to test project deletion?

[orhun]

General +1 from me, will check again once @oddgrd's review points are addressed.

[oddgrd]

Could we also expand some of the gateway integration tests to test project deletion?

Can we do this? At least a project without resources shouldn't be too tricky.