feat(cmd): flags override env vars

[dearyhud]

Closes #16246

• CHANGELOG.md updated with a link to the PR (not the Issue)
• Well-formatted commit messages
• Rebased/mergeable
• Tests pass

[imogenkinsman]

I'm not wild about this (and some of the supporting methods); it's a bit harder to understand and feels like it's a separation of concerns violation (CLI and service logic starting to bleed into the organization struct).

[dearyhud]

fair point, I tried to tread really lightly when I added this but crossed over boundaries a little. on the flip, this does DRY up a lot of cobra stuff across the board, and organization lookups by name all go through one code path here. I'm open to suggestions on where to put this as well

[kelwang]

I agree it's a little hard to understand at beginning. But overall, it would help us to make all of our flags more consistent. So still worth it in my opinion. Ideally, CLI should inherent all the behavior of the API, plus some interactive features and file parsing.

[kelwang]

LGTM, maybe clarify the org embedding thing with @jademcgough before you merge it.

[russorat]

@jademcgough let's figure out what to do with this PR.

[jsteenb2]

this was remedied remedied here: #16491

closing this issue as its completed now