[API] Change the GET /v1/bricks/{id} variables field

[mirkoCrobu]

Motivation

closes #92

Align the GET /v1/bricks/{id} response with the config_variables refactored here #18.

deprecate the variables field returned as a map of object
add config_variables field as an array of objects

Change description

curl 127.0.0.1:8800/v1/bricks/arduino:visual_anomaly_detection
{
  "id": "arduino:visual_anomaly_detection",
  "name": "Visual Anomaly Detection",
  "author": "Arduino",
  "description": "",
  "category": "image",
  "status": "installed",
  "require_model": true,
 // Depreacted
  "variables": {
    "CUSTOM_MODEL_PATH": {
      "default_value": "/home/arduino/.arduino-bricks/ei-models",
      "description": "path to the custom model directory",
      "required": false
    },
    "EI_V_ANOMALY_DETECTION_MODEL": {
      "default_value": "/models/ootb/ei/concrete-crack-anomaly-detection.eim",
      "description": "path to the model file",
      "required": false
    }
 // Added
 "config_variables": [
    {
      "name": "CUSTOM_MODEL_PATH",
      "default_value": "/home/arduino/.arduino-bricks/ei-models",
      "description": "path to the custom model directory",
      "required": false
    },
    {
      "name": "EI_OBJ_DETECTION_MODEL",
      "default_value": "/models/ootb/ei/yolo-x-nano.eim",
      "description": "path to the model file",
      "required": false
    }
  ],
  },

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.

[dido18]

LGTM