add set volume api

[simonlsx]

gitv set volume API: http://[ip]:6095/general?action=setVolum&volum=[volume]&ts=[current timestamp]&sign=[md5]

• ip: mitv/mibox IP
• volume: volume level 0-50
• current timestamp: integer with more than 5 digits should be ok
• md5: see below

md5(sign) calculation method:

• md5 checksum of "mitvsignsalt[volume][mitv ethernet Mac address][current timestamp]"
• P.S Ethernet Mac address, NOT WiFi Mac address

For example :

• ip : "192.168.1.100"
• ethernet Mac address : "ab:11:22:33:44:55"
• timestamp : "11111"
• volume : "20"
• md5sum("mitvsignsalt20ab:11:22:33:44:5511111") : "ee242baf69d53fb6a51b43611b593da3"

Therefore the url will be http://192.168.1.100:6095/general?action=setVolum&volum=20&ts=11111&sign=ee242baf69d53fb6a51b43611b593da3