[AIRFLOW-6752] Add GoogleAnalyticsRetrieveAdsLinksListOperator

[michalslowikowski00]

The operator lists webProperty-Google Ads links for a given web property

Issue link: AIRFLOW-6752

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[potiuk]

Few nits mainly about documentation :).

[potiuk]

It would be great to describe what are the results. What do they contain? Link to the doc in Google docs is enough but an example would be great.

[turbaszek]

Would you mind adding a system tests:

import pytest

from tests.providers.google.cloud.utils.gcp_authenticator import GMP_KEY
from tests.test_utils.gcp_system_helpers import MARKETING_DAG_FOLDER, GoogleSystemTest, provide_gcp_context

# Required scopes
SCOPES = [
    'https://www.googleapis.com/auth/analytics',
    'https://www.googleapis.com/auth/analytics.edit',
    'https://www.googleapis.com/auth/cloud-platform',
]

@pytest.mark.system("google.marketing_platform")
@pytest.mark.credential_file(GMP_KEY)
class TestSystemGoogleAds(GoogleSystemTest):
    @provide_gcp_context(GMP_KEY, scopes=SCOPES)
    def test_run_example_dag(self):
        self.run_dag('example_google_analytics', MARKETING_DAG_FOLDER)

[turbaszek]

LGTM!