Support for Docker setup 🐋

[csalmeida]

• Adds support to spin up a development environment do develop a Hozokit theme with Docker

This brings advantages such as:

• No need to configure or install WordPress, MySQL or Node, this is now all automated.
• npm install and npm run watch are ran automatically.

For anyone using Docker you can try it by changing directory into the theme folder and running docker compose up.
If environment variables are changed run docker compose restart.
To shutdown the containers run docker compose down.

At the moment the WordPress site can be accessed via localhost:8080 or localhost:2077 if hot reloading is setup.