feat(cli): add -json flag for state show

[mildwonkey]

This is less of a PR and more of a cry for help - I set out to implement a json output for terraform state show, and ended up with something that works fine but is tacked on in ways I'm not comfortable with (among other complaints, the not-implemented HumanRendered equivalent).

This is - not the worst thing I've ever written (unfortunately), but better probably involves a huge amount of refactoring, so I think our options are:

1. this, but do it better (I'll take any suggestions that don't involve refactoring everything!)
2. I can close and forget about this until we decide to take on the a massive ui/streams/views refactoring
3. this, not much better (because we'll refactor everything to use consistent views eventually, and it's fine)("""eventually""")

Fixes #

Target Release

1.16.x

Rollback Plan

• If a change needs to be reverted, we will roll out an update to the code within 7 days.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

CHANGELOG entry

• This change is user-facing and I added a changelog entry.
• This change is not user-facing.

[github-actions]

Changelog Warning

Currently this PR would target a v1.16 release. Please add a changelog entry for in the .changes/v1.16 folder, or discuss which release you'd like to target with your reviewer. If you believe this change does not need a changelog entry, please add the 'no-changelog-needed' label.