Integration service - Create base service

[jkralik]

Feature Request:

Integration of Base Service into plgd-dev/hub

Acceptance Criteria:

• Establish a base service integrated into plgd-dev/hub with a directory/file structure similar to that of certificate-authority.
• Develop a service that processes a configuration YAML file; the configuration should have a structure akin to that of other services.
• Enable the service to listen on both HTTP and gRPC protocols (initially without performing any specific actions).
• Implement a Makefile for the service and integrate it with the root Makefile.
• Set up a GitHub pipeline for building the Docker image.
• Configure the GitHub pipeline to run tests over the integration service.
• One simple test that just print config, run and stop service