Patch/smarter peek durations

[GlenDC]

For macos l4 proxy, an attempt in a small optimization. Don't think it will do much if anything at all,
but in some cases it might cause speedups for some background protocols.

Only peek http/tls with a slightly longer peek windows if it's a known std port for that protocol,
and otherwise use a shorter window.

Mostly just an experiment, don't think it will be a noticable change,
but never the less a good chance probably anyway. As I noticed some protocols in logs of Samuel
from background services (e.g. from apple) which are "server first" protocols,
meaning there would be nothing to peek for those... so at least those will have now only a very short window to peek.

Summary by Aikido

Security Issues: 0	Quality Issues: 0	Resolved Issues: 0

⚡ Enhancements

• Introduced port-aware peek durations; added config, CLI, and tests.
• Added helper functions is_known_http_port and is_known_tls_port for selecting longer peek windows.

^{More info}