feat: LogPipeline flow health status based on Fluent Bit alerts

[skhalash]

Description

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

• Map Fluent Bit metrics-based alerts to the LogPipeline status
• Refactor the existing self-monitor prober and webhook handler code to allow a LogPipeline variant

Changes refer to particular issues, PRs or documents:

• Support for fluentbit in advanced status handling #917

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.
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