chore: move prettier config file to ESM

Author: Belco90

.prettierrc.mjs prettier.config.js.prettierrc.mjs renamed to prettier.config.js

@@ -1,13 +1,13 @@
 import { writeFile } from 'node:fs/promises';
 import { resolve } from 'node:path';
 
-import { format, resolveConfig } from 'prettier';
+import * as prettier from 'prettier';
 
 import type { TSESLint } from '@typescript-eslint/utils';
 
 const __dirname = new URL('.', import.meta.url).pathname;
 
-const prettierConfig = resolveConfig(__dirname);
+const prettierConfig = prettier.resolveConfig(__dirname);
 
 const addAutoGeneratedComment = (code: string) =>
 	[
@@ -30,7 +30,7 @@ export const writeConfig = async (
 
 	export default ${JSON.stringify(config)} satisfies Linter.LegacyConfig;
 	`;
-	const configStr = await format(addAutoGeneratedComment(code), {
+	const configStr = await prettier.format(addAutoGeneratedComment(code), {
 		parser: 'typescript',
 		...(await prettierConfig),
 	});