Publish plugin on npm

[KirillDogadin-std]

Goal

Have the package publicly available and installable by npm

Context

After the plugin has been developed, we need to provide the public access for it.

Tasks

• [ ] login via cli tool https://docs.npmjs.com/cli/v9/commands/npm-login
  • [ ] depending on the location of the configuration file on you machine, add .npmrc to gitignore (globally)
• [ ] Rename the package to contain organisation name in front of it.
  • [ ] @sidestream/solhint-plugin-makerdao in package.json
• [ ] merge the pr with renaming (in pr use contributes instead of closes so that this issue remains open)
• [ ] follow the steps here
  • [ ] run npm publish --access public in the package directory.

[valiafetisov]

I suggest to also update the readme to include a new section about npm publishing aka Publish to [npm](https://www.npmjs.com/)

• Pre-requirements (specific valid commands to execute to setup the env)
• Full (single) command to execute in order to publish the package