PoC 1.1.0 (pre2) - real S7-1500 & S7-1200 support

Experimental real PLC support

pre2 fixes the Release variant (used the wrong key for symmetric key id) and adds S7-1200 support

Resolves (probably): #3
Full Changelog: v1.1.0-pre1...v1.1.0-pre2

Usage

192.168.1.10 - PLC IP address
102 - S7-CommPlus port (most likely the same across all PLCs)

Windows (cmd)

HarpoS7.PoC.exe 192.168.1.10:102

Windows (PowerShell)

.\HarpoS7.PoC.exe 192.168.1.10:102

Linux

chmod +x ./HarpoS7.PoC
./HarpoS7.PoC 192.168.1.10:102

OS X

chmod +x ./HarpoS7.PoC
./HarpoS7.PoC 192.168.1.10:102