Add a script to check of the usage of the correct lock files

[mheob]

It could be helpful to check if there are the correct package manager is used.
For that, a script like this could help:

import { existsSync } from 'node:fs';

const checkLockFiles = (): string[] => {
	const uesYarnLockFileMessage = 'Please remove it and use only "pnpm-lock.yaml".';
	const invalidFileMessage = (lockFile: string): string =>
		`Invalid occurrence of "${lockFile}" file. ${uesYarnLockFileMessage}`;

	const errors: string[] = [];

	const npmLockFile = 'package-lock.json';
	existsSync(npmLockFile) && errors.push(invalidFileMessage(npmLockFile));

	const yarnLockFile = 'yarn.lock';
	existsSync(yarnLockFile) && errors.push(invalidFileMessage(yarnLockFile));

	const pnpmLockFile = 'pnpm-lock.yaml';
	!existsSync(pnpmLockFile) &&
		errors.push('The "pnpm-lock.yaml" does not exist or cannot be read. Please run "pnpm i".');

	return errors;
};

const invalidLockFileErrors = checkLockFiles();

if (invalidLockFileErrors.length > 0) {
	for (const error of invalidLockFileErrors) console.log(error);
	process.exit(1);
}

process.exit(0);