Move scorer: Orderer

[handeyeco]

Summary:

Move scoring logic for Orderer. I updated the tests a little bit so as to not rely on orderer.testdata.ts which I didn't want to split and which I think is overkill for these tiny pure functions.

Issue: LEMS-2737

Test plan:

Nothing should change, moving code

[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (9d1cc3b) and published it to npm. You
can install it using the tag PR2114.

Example:

yarn add @khanacademy/perseus@PR2114

If you are working in Khan Academy's webapp, you can run:

./dev/tools/bump_perseus_version.sh -t PR2114

[github-actions]

Size Change: +331 B (+0.02%)

Total Size: 1.47 MB

Filename	Size	Change
packages/kmath/dist/es/index.js	86.8 kB	+3.71 kB (+4.47%)
packages/math-input/dist/es/index.js	77.6 kB	-355 B (-0.46%)
packages/perseus-core/dist/es/index.js	27.1 kB	+4.03 kB (+17.47%)	⚠️
packages/perseus-editor/dist/es/index.js	689 kB	-152 B (-0.02%)
packages/perseus-score/dist/es/index.js	113 kB	+4.39 kB (+4.06%)
packages/perseus/dist/es/index.js	394 kB	-11.3 kB (-2.79%)
packages/perseus/dist/es/strings.js	4.87 kB	+18 B (+0.37%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	39 kB
packages/keypad-context/dist/es/index.js	760 B
packages/math-input/dist/es/strings.js	1.79 kB
packages/perseus-linter/dist/es/index.js	22.2 kB
packages/pure-markdown/dist/es/index.js	3.66 kB
packages/simple-markdown/dist/es/index.js	12.5 kB

_{compressed-size-action}

[benchristel]

LGTM!