feat: add support for singleton brick services

[MatteoPologruto]

Motivation

A brick service is a singleton service that the arduino-app-cli must instantiate only once and shared among different bricks. A brick that needs a service, can define it in the brick_config.yaml this way:

requires_services: ["arduino:genie"]

During the provisioning process of an app, the arduino-app-cli should collect all the shared services needed to run the bricks and instantiate them all once.

Change description

This PR introduces two main changes:

• a servicesIndex is created following the same principles of the bricksIndex and modelsIndex
• the services are collected and instantiated during the provisioning of the app

Additional Notes

Reviewer checklist

• PR addresses a single concern.
• PR title and description are properly filled.
• Changes will be merged in main.
• Changes are covered by tests.
• Logging is meaningful in case of troubleshooting.

[lucarin91]

LGTM, just some small issues

[dido18]

We need to get the service even in the logs endpoint to retrieve the compose services' logs.

Could you double-check it?

[lucarin91]

We need to get the service even in the logs endpoint to retrieve the compose services' logs.

Could you double-check it?

yeah we probably need to update the logs, but I would do it in a separate issue. I think we should get the services list from docker-compose instead of parsing the compose files of each brick.

[MatteoPologruto]

We should probably also load the brick services filtering them using the supported_boards field like we are doing in #343. Should I apply this change here or should we merge and apply the change in the other PR? @lucarin91 @dido18

[dido18]

We should probably also load the brick services filtering them using the supported_boards field like we are doing in #343. Should I apply this change here or should we merge and apply the change in the other PR? @lucarin91 @dido18

I am fine to address this in another PR.

[dido18]

Remember to open a PR to check other usage of docker-compose services