Added make:docker:database for docker-compose.yaml

Hi Makers!

This release adds one new maker command: make:docker:database - which generates a database service into a docker-compose.yaml file. This works super well if you use the Symfony binary as your local web server. You can find all the details while running the command.

• [make:docker:database] Added a new command to generate a database service in your docker-compose.yaml file - #640 thanks to @jrushlow!

Happy Making!