Initial commit: RouteWatch BGP stream monitor

- Connects to RIPE RIS Live stream to receive real-time BGP updates
- Stores BGP data in SQLite database:
  - ASNs with first/last seen timestamps
  - Prefixes with IPv4/IPv6 classification
  - BGP announcements and withdrawals
  - AS-to-AS peering relationships from AS paths
  - Live routing table tracking active routes
- HTTP server with statistics endpoints
- Metrics tracking with go-metrics
- Custom JSON unmarshaling to handle nested AS sets in paths
- Dependency injection with uber/fx
- Pure Go implementation (no CGO)
- Includes streamdumper utility for debugging raw messages

internal/database/interface.go

@@ -0,0 +1,46 @@
+package database
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// Stats contains database statistics
+type Stats struct {
+	ASNs         int
+	Prefixes     int
+	IPv4Prefixes int
+	IPv6Prefixes int
+	Peerings     int
+	LiveRoutes   int
+}
+
+// Store defines the interface for database operations
+type Store interface {
+	// ASN operations
+	GetOrCreateASN(number int, timestamp time.Time) (*ASN, error)
+
+	// Prefix operations
+	GetOrCreatePrefix(prefix string, timestamp time.Time) (*Prefix, error)
+
+	// Announcement operations
+	RecordAnnouncement(announcement *Announcement) error
+
+	// Peering operations
+	RecordPeering(fromASNID, toASNID string, timestamp time.Time) error
+
+	// Live route operations
+	UpdateLiveRoute(prefixID, originASNID uuid.UUID, peerASN int, nextHop string, timestamp time.Time) error
+	WithdrawLiveRoute(prefixID uuid.UUID, peerASN int, timestamp time.Time) error
+	GetActiveLiveRoutes() ([]LiveRoute, error)
+
+	// Statistics
+	GetStats() (Stats, error)
+
+	// Lifecycle
+	Close() error
+}
+
+// Ensure Database implements Store
+var _ Store = (*Database)(nil)