add portforward config to gui (#1198)

* Added port forwarding to the GUI interface
* Separated port forwarding into a separate drop-down menu

easytier-web/frontend-lib/src/locales/cn.yaml

@@ -150,6 +150,12 @@ socks5_help: |
 
 exit_nodes: 出口节点列表
 exit_nodes_help: 转发所有流量的出口节点，虚拟IPv4地址，优先级由列表顺序决定
+  
+port_forwards: 端口转发
+port_forwards_help: "将本地端口转发到虚拟网络中的远程端口。例如：udp://0.0.0.0:12345/10.126.126.1:23456，表示将本地UDP端口12345转发到虚拟网络中的10.126.126.1:23456。可以指定多个。"
+port_forwards_bind_addr: "绑定地址，如：0.0.0.0"
+port_forwards_dst_addr: "目标地址，如：10.126.126.1"
+port_forwards_add_btn: "添加"
 
 mtu: MTU
 mtu_help: |

easytier-web/frontend-lib/src/locales/en.yaml

@@ -151,6 +151,12 @@ socks5_help: |
 exit_nodes: Exit Nodes
 exit_nodes_help: Exit nodes to forward all traffic to, a virtual ipv4 address, priority is determined by the order of the list
 
+port_forwards: Port Forward
+port_forwards_help: "forward local port to remote port in virtual network. e.g.: udp://0.0.0.0:12345/10.126.126.1:23456, means forward local udp port 12345 to 10.126.126.1:23456 in the virtual network. can specify multiple."
+port_forwards_bind_addr: "Bind address, e.g.: 0.0.0.0"
+port_forwards_dst_addr: "Destination address, e.g.: 10.126.126.1"
+port_forwards_add_btn: "Add"
+
 mtu: MTU
 mtu_help: |
   MTU of the TUN device, default is 1380 for non-encryption, 1360 for encryption. Range:400-1380