Remove routing table and snapshotter packages, update status page

- Remove routingtable package entirely as database handles all routing data
- Remove snapshotter package as database contains all information
- Rename 'Connection Status' box to 'RouteWatch' and add Go version, goroutines, memory usage
- Move IPv4/IPv6 prefix counts from Database Statistics to Routing Table box
- Add Peers count to Database Statistics box
- Add go-humanize dependency for memory formatting
- Update server to include new metrics in API responses

internal/database/database.go

@@ -396,6 +396,12 @@ func (d *Database) GetStats() (Stats, error) {
 		return stats, err
 	}
 
+	// Count peers
+	err = d.queryRow("SELECT COUNT(*) FROM bgp_peers").Scan(&stats.Peers)
+	if err != nil {
+		return stats, err
+	}
+
 	// Get database file size
 	fileInfo, err := os.Stat(d.path)
 	if err != nil {

internal/database/interface.go

@@ -11,6 +11,7 @@ type Stats struct {
 	IPv4Prefixes           int
 	IPv6Prefixes           int
 	Peerings               int
+	Peers                  int
 	FileSizeBytes          int64
 	LiveRoutes             int
 	IPv4PrefixDistribution []PrefixDistribution