Feature: Multiple IPs for each Torguard server

- Fallback on IP from configuration file if DNS resolution fails
- Download both TCP and UDP zip files to detect support for each
- Filter servers by supported network protocol
-

internal/models/server.go

@@ -161,15 +161,17 @@ func (s *SurfsharkServer) String() string {
 }
 
 type TorguardServer struct {
-	Country  string `json:"country"`
-	City     string `json:"city"`
-	Hostname string `json:"hostname"`
-	IP       net.IP `json:"ip"`
+	Country  string   `json:"country"`
+	City     string   `json:"city"`
+	Hostname string   `json:"hostname"`
+	TCP      bool     `json:"tcp"`
+	UDP      bool     `json:"udp"`
+	IPs      []net.IP `json:"ips"`
 }
 
 func (s *TorguardServer) String() string {
-	return fmt.Sprintf("{Country: %q, City: %q, Hostname: %q, IP: %s}",
-		s.Country, s.City, s.Hostname, goStringifyIP(s.IP))
+	return fmt.Sprintf("{Country: %q, City: %q, Hostname: %q, TCP: %t, UDP: %t, IPs: %s}",
+		s.Country, s.City, s.Hostname, s.TCP, s.UDP, goStringifyIPs(s.IPs))
 }
 
 type VyprvpnServer struct {