Passive stateful conntrack mode support in loxilb

[TrekkieCoder]

loxilb provide's its own alternate conntrack implementation. Some users have requested conntrack only mode where loxilb does nothing else but conntrack mode. It might be an interesting feature for quick debugging in the cloud-native networking arena without affecting anything.

[UltraInstinct14]

This feature is down the priority list unless community has need for it. For now, closing it.