FEATURE: Implement firewall ( pf stats ) metrics

[ihatemodels]

Firewall ( pf stats ) metrics

Description

• Implements the some firewall pf stats metrics.
• Fixes some minor logging bugs.
• Increase the TLSHandshakeTimeout in the opnsese HTTP client

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist:

• I have updated the docs/metrics.md file, when I introduced new metrics
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules