feat(integrations): metrics for on-call integration SLOs

[mifu67]

Add logging via EventLifecycle and EventLifecycleMetric to PagerDuty and Opsgenie.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: src/sentry/integrations/opsgenie/client.py

Function	Unhandled Issue
send_notification	ApiUnauthorized: {"message":"Could not authenticate","took":0.007,"requestId":"78fc3a3b-c6fb-4804-826f-5486a12fed27"} ... Event Count: 1

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[codecov]

❌ 52 Tests Failed:

Tests completed	Failed	Passed	Skipped
154	52	102	1

View the top 3 failed tests by shortest run time

 tests.sentry.api.endpoints.test_system_options

Stack Traces | 0s run time

No failure message available

 tests.sentry.incidents.endpoints.test_organization_alert_rule_anomalies

Stack Traces | 0s run time

No failure message available

 tests.sentry.integrations.slack.test_message_builder

Stack Traces | 0s run time

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