Modular Router Configuration (RFD 662) - Tracking Issue #11457

Tracking issue for RFD 662 - Modular Router Configuration.

• omicron new router configuration APIs
• omicron mgd reconciler changes
• maghemite mgd reconciler changes
• maghemite multi-router support
• dendrite multi-routing table support - [route] per-endpoint routing tables (RFD 662) dendrite#386
• sidecar-lite multi-routing table support - [route] per-endpoint routing tables (RFD 662) sidecar-lite#182
• opte per-port prioritized multi-v2bs - [V2B] per-router V2B tables and per-port router lists opte#1088
• poptrie lookup enriched with winning prefix - add lookup_with_prefix nicolaskagami/poptrie#20