Add support for selective test run with a test plan

There is a general mechanism used by Allure adapters to run tests selectively. It uses a test plan - a .json file with the following schema:

```json
{
"type": "object",
"properties": {
"tests": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": { "type": "string" },
"selector": { "type": "string" }
}
}
}
}
}
```

A path to a test plan is provided as a value of the `ALLURE_TESTPLAN_PATH` environment variable.

If a valid test plan file is provided, only matched tests should be run. A test is matched if there is at least one entry in the `tests` array, such that:

1. If the `id` property is present in the entry AND the test has an Allure ID (added via the `allure_id` or `as_id` label), the `id` property must be the same as the Allure ID of the test, OR
2. If the `selector` property is present in the entry, it must be the same as the test's `fullName`.

### Motivation
Test plan support allows selective runs from TMS (e.g., TestOps). Ideally, the mechanism should be supported by all Allure adapters.