Adds prettier and stylelint files

.prettierignore

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+build/
+node_modules/
+vendor/
+style.css
+README.md

.prettierrc.js

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+module.exports = {
+	...require( '@wordpress/prettier-config' ),
+	overrides: [
+		{
+			files: '*.scss',
+			options: {
+				singleQuote: true,
+			},
+		},
+	],
+};

.stylelintignore

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+build/
+vendor/
+!.*.js

.stylelintrc.json

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+{
+	"extends": [
+		"@wordpress/stylelint-config/scss",
+		"stylelint-config-prettier"
+	],
+	"rules": {
+		"at-rule-empty-line-before": null,
+		"declaration-colon-newline-after": null,
+		"declaration-no-important": true,
+		"function-parentheses-space-inside": null,
+		"no-descending-specificity": null,
+		"rule-empty-line-before": null,
+		"selector-pseudo-class-parentheses-space-inside": null,
+		"scss/at-rule-no-unknown": [
+			true,
+			{
+				"ignoreAtRules": [
+					"tailwind",
+					"apply",
+					"layer",
+					"variants",
+					"responsive",
+					"screen"
+				]
+			}
+		],
+		"string-quotes": "single"
+	}
+}