treehouses shadowsocks (fixes #1596)

[darthnoward]

fixes #1596

how to test

The easiest way to see if it's working is to see if your ip address changes.

Be sure to use this image for testing, or manually install the two dependent packages
apt install -y shadowsocks-libev proxychains4

You can use this json file for testing

{
                "server": "sgp02.clashcloud.tech",
                "local_address": "127.0.0.1",
                "local_port": 1080,
                "timeout": 300,
                "server_port": 58817,
                "password": "1vgfdr",
                "method": "rc4-md5"
}

• do ./cli.sh shadowsocks add then give a name for this config

• paste the json file inside, save and quit

• do ./cli.sh shadowsocks start [name of the config]

• upon success, do ./cli.sh shadowsocks enter [name of the config]

now you are in a new shell session proxied by shadowsocks client!

do curl ipinfo.io to see if your ip address and location changes.

---

After adding more to it, a sample output is obtained:

root@treehouses:/cli# ./cli.sh shadowsocks list
Config:

hk
TW
us2
us

Running:

CONFIG          PORT                    LOCATION
hk              1081             HK -  Central and Western
us2             1082             US -  California
TW              1083             TW -  Taiwan

Failed:

us
        Run `journalctl -u shadowsocks-libev-local@us.service` for more info.

[darthnoward]

2 issues in codeclimate are marked as exceptions and thus don't require fixing