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/routewatch/app_test.go

@@ -0,0 +1,12 @@
+package routewatch
+
+import (
+	"testing"
+)
+
+func TestNewLogger(t *testing.T) {
+	logger := NewLogger()
+	if logger == nil {
+		t.Fatal("NewLogger returned nil")
+	}
+}