Abstract CLI From Functionality

[jbolda]

In talking with @Aslemammad, we discussed that it would be worth abstracting out the arg parse portion of the CLI from the actual CLI functions.

• This improve the ability to test as we can execute the functions directly in the tests.
• This will also improve the flexibility in use cases such setting it up as a GH Action in add github action #341.

[mmkal]

@Aslemammad wanna convert from citty to trpc-cli? That way it can just be a standard trpc router, very easy to call any way you like (e.g. programmatically via createCaller in tests, but if people wanted to get really creative with it you could expose the functionality over HTTP etc.)

I'd be happy to make a PR for this if you'd be open to it.