phpMyAdmin for linux

[YevhenZvieriev]

Accordingly, to install instructions for Linux we should copy compose.dev-linux.yaml to compose.dev.yaml before installing Magento but the compose.dev-linux.yaml doesn`t contain phpMyAdmin, this PR adds it.

[what-the-diff[bot]]

PR Summary

• Incorporation of phpMyAdmin into the development environment The addition of a service called phpMyAdmin, a renowned tool for managing MySQL databases, enhances the ease of database operations. This service has been added to a file named compose.dev-linux.yaml, which is essentially the recipe for our application's environment.
• Utilization of a specific Docker image We're harnessing the power of an image named linuxserver/phpmyadmin— a pre-configured and packaged setup for running phpMyAdmin smoothly.
• Configuration and Port Mapping The service employs an environment file to tailor the database to our needs. Also, to ensure a seamless network flow, the internal server's port number 80 has been linked to port 8080 on the host machine.
• Service Dependency Lastly, the operation of this service relies on the db service, implying that it can't function without the database service being active.

[markshust]

Thank you, pulling this one in!