Fakedns improvements (#731)

Co-authored-by: Shelikhoo <xiaokangwang@outlook.com>
Co-authored-by: sixg0000d <sixg0000d@gmail.com>
Co-authored-by: Loyalsoldier <10487845+Loyalsoldier@users.noreply.github.com>

infra/conf/xray.go

@@ -78,6 +78,8 @@ func (c *SniffingConfig) Build() (*proxyman.SniffingConfig, error) {
 				p = append(p, "tls")
 			case "fakedns":
 				p = append(p, "fakedns")
+			case "fakedns+others":
+				p = append(p, "fakedns+others")
 			default:
 				return nil, newError("unknown protocol: ", protocol)
 			}