[Feature] Update the Test Selection With Pydantic & Remove TestRunConfig

[antonio-amjr]

Currently, the Test Selection uses a set of dictionaries to store the tests chosen by the user.

This change removes that set of dictionaries replacing by objects with Pydantic's BaseModel, since Pydantic brings some advantages.

Fixes: project-chip/certification-tool#64

This change is considering: #6

Warning: This may impact the Frontend side, since the JSON request data sent to the Backend's API (createTestRunExecution).

The current JSON data format being used is:

 "selected_tests": {
    "SDK YAML Tests": {
      "FirstChipToolSuite": {
        "TC-ACE-1.1": 1
      },
      "FirstManualSuite": {
        "TC-ACT-2.1": 1,
        "TC-ALOGIN-12.2": 1
      },
      "FirstAppSuite": {
        "TC-CC-2.2": 1
      }
    }
  }

Now the new JSON data format would be:

"selected_tests": {
    "collections": [
      {
        "public_id": "SDK YAML Tests",
        "test_suites": [
          {
            "public_id": "FirstChipToolSuite",
            "test_cases": [
              {"public_id": "TC-ACE-1.1", "iterations": 1},
              {"public_id": "TC-ACL-1.1", "iterations": 1}
            ]
          }
        ]
      },
      {
        "public_id": "python_tests",
        "test_suites": [
          {
            "public_id": "OnboardingPayloadTestSuite",
            "test_cases": [
              {"public_id": "TC-DD-1.1", "iterations": 1}
            ]
          }
        ]
      }
    ]
  }

[ccruzagralopes]

I don't know if you remembered this, but you'll probably need to update CLI as well

[antonio-amjr]

I don't know if you remembered this, but you'll probably need to update CLI as well

No, I was not remembering. I'll take a look. Thanks

[antonio-amjr]

@ccruzagralopes @mikaelhm The CLI PR change was created:
project-chip/certification-tool-cli#4

Please review when possible. Thanks

[raul-marquez-csa]

Addressed in PR
Updates test_run_executions test selection JSON payload to Pydantic's BaseModel format #16