chore: Optimize reconciliation triggered by the self-monitor webhook

[skhalash]

Description

Changes proposed in this pull request (what was done and why):

• Split flowheath package into alertrules and prober. alertrules package defines which rules are rendered, which pipelines are supported, and exposes utilities that can be use by the prober and webhook packages (e.g. for rule matching).
• Implement pipeline filtering in the webhook, so that only the affected resource is reconciled.
• Simplify rule name handling.

Changes refer to particular issues, PRs or documents:

• Add webhook to trigger status reconciliations faster #903

Traceability

• The PR is linked to a GitHub issue.
• New features have a milestone set.
• New features have defined acceptance criteria in a corresponding GitHub Issue, and all criteria are satisfied with this PR.
• The corresponding GitHub issue has a respective area and kind label.
• The follow-up issues (if any) are linked in the Related Issues section.
• Adjusted the documentation if the change is user-facing.
• The feature is unit-tested
• The feature is e2e-tested

[kyma-bot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[skhalash]

/test pull-telemetry-manager-build

[skhalash]

/test pull-telemetry-manager-build

[skhalash]

/test pre-telemetry-manager-presubmit-scanner

[skhalash]

/test pull-telemetry-manager-build