Improve `format:write` script

[andriilive]

Current format:write script command code violates DRY principles 😿

An example of duplicated prettier command code from package.json:

"format": "prettier \"**/*.{css,js,json,jsx,ts,tsx}\"",
"format:write": "prettier --write \"**/*.{css,js,json,jsx,ts,tsx}\""

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Improved script 👉🏻 https://github.com/steven-tey/precedent/pull/76

Common example

"format": "prettier \"**/*.{css,js,json,jsx,ts,tsx}\"",
"format:write": "npm run format -- --write"

Prettier with --cache

"format": "prettier --cache \"**/*.{css,js,json,jsx,ts,tsx}\"",
"format:write": "npm run format -- --write"