[Feature]

1.Add Network rule, match network type(TCP/UDP)
2.Add logic rules(NOT,OR,AND)
-AND,((DOMAIN,baidu.com),(NETWORK,UDP)),REJECT

(cherry picked from commit d7092e2e37f2c48282c878edea1b2ebc2912b09a)

rule/common/base.go

@@ -0,0 +1,53 @@
+package common
+
+import (
+	"errors"
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+var (
+	errPayload = errors.New("payload error")
+
+	noResolve = "no-resolve"
+)
+
+func HasNoResolve(params []string) bool {
+	for _, p := range params {
+		if p == noResolve {
+			return true
+		}
+	}
+	return false
+}
+
+func FindNetwork(params []string) C.NetWork {
+	for _, p := range params {
+		if p == "tcp" {
+			return C.TCP
+		} else if p == "udp" {
+			return C.UDP
+		}
+	}
+	return C.ALLNet
+}
+
+func FindSourceIPs(params []string) []*net.IPNet {
+	var ips []*net.IPNet
+	for _, p := range params {
+		if p == noResolve || len(p) < 7 {
+			continue
+		}
+		_, ipnet, err := net.ParseCIDR(p)
+		if err != nil {
+			continue
+		}
+		ips = append(ips, ipnet)
+	}
+
+	if len(ips) > 0 {
+		return ips
+	}
+	return nil
+}