(chore) Separate linting and formatting concerns

[denniskigen]

Requirements

• This PR has a title that briefly describes the work done including the ticket number. If there is a ticket, make sure your PR title includes a conventional commit label. See existing PR titles for inspiration.
• My work conforms to the OpenMRS 3.0 Styleguide and design documentation.
• My work includes tests or is validated by existing tests.

Summary

Our current setup is running Prettier as a part of ESLint. These are two separate concerns that should be handled separately by different tools.

This PR removes eslint-plugin-prettier and eslint-config-prettier from our linting config as recommended here and here. I've also separated ESLint concerns from Prettier so that ESLint doesn't handle both. The recommended modern approach treats Prettier and ESLint as separate unrelated tools.

I've also moved the prettier script from the root-level package.json to the lint-staged config so that lint-staged runs Prettier after ESLint.

Additionally, I've bumped yarn to the latest stable version.

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[github-actions]

Size Change: +4 B (0%)

Total Size: 1.05 MB

ℹ️ View Unchanged

Filename	Size	Change
dist/125.js	89.8 kB	0 B
dist/225.js	9.82 kB	0 B
dist/272.js	6.59 kB	0 B
dist/294.js	2.63 kB	0 B
dist/340.js	189 kB	0 B
dist/366.js	6.94 kB	0 B
dist/612.js	6.59 kB	0 B
dist/693.js	1.58 kB	0 B
dist/709.js	2.42 kB	0 B
dist/771.js	236 kB	+4 B (0%)
dist/787.js	822 B	0 B
dist/800.js	175 kB	0 B
dist/main.js	315 kB	0 B
dist/openmrs-form-engine-lib.js	3.22 kB	0 B

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[samuelmale]

Thanks @denniskigen!