🐛 Implement sorting on structs when marshaling

[JonahSussman]

Fixes #418

demo-output.yaml's diff looks really ugly, but all this PR does is shuffle some stuff around.

With this, we may not the sed and yq stuff in this workflow anymore:

analyzer-lsp/.github/workflows/demo-testing.yml

Lines 20 to 25 in 740142e

	- name: run demo image and ensure violations output unchanged
	run: |
	podman run -v $(pwd)/demo-output.yaml:/analyzer-lsp/output.yaml:Z localhost/testing:latest
	diff \
	<(sort <(sed 's/incidents\.[0-9]\+/incidents\.x/g' <(yq -P 'sort_keys(..)' -o=props <(git show HEAD:demo-output.yaml)))) \
	<(sort <(sed 's/incidents\.[0-9]\+/incidents\.x/g' <(yq -P 'sort_keys(..)' -o=props <(cat demo-output.yaml))))

[shawn-hurley]

I'm just thinking out loud here, but what do we think about doing this for JSON while we do this?

I don't think encoding/json does sorting by default so it may be worth it.

[shawn-hurley]

What is this used for?

[JonahSussman]

I accidentally left it in before committing. I was doing some exploration on both JSON and YAML. Hopefully the "Implemented JSON support" commit elucidates it

[shawn-hurley]

Looks good to me