Publish this plugin in the WordPress plugin directory

[martin-helmich]

To do:

• Submit this plugin for review at https://wordpress.org/plugins/developers/add/
• TBD: Also publish on FAIR PM? https://fair.pm
• Promote this plugin on https://www.mittwald.de/cms-hosting/wordpress-hosting

Blocked by:

• Release a stable(-ish) version of this plugin #1

Relevant sources:

• https://wordpress.org/plugins/developers/add/
• https://developer.wordpress.org/plugins/wordpress-org/detailed-plugin-guidelines/