Adapt package to latest module template standards

[Mrtenz]

I've adapted this package to the latest module template standards. Due to the nature of this package, there are some differences between this and the module template:

• There are no build or test steps in the workflow, as we do not build anything and there are no tests.
• There is no documentation generation, as we do not have any JSDoc documentation.
• The publish workflow was adapted slightly to work without the need to build.

I've also updated prettier to the version used in the module template, and added prettier-plugin-packagejson.

[Mrtenz]

Since we run lint for different Node.js versions, it may still be a good idea to keep the prepare workflow. Otherwise each lint job would be overwriting the same cache (as the Node.js version is not included in the cache key with actions/setup-node).

[Gudahtt]

LGTM!