Extended cpp and go support

[tudor-timcu]

• Dynamic and easy way of hooking function in C++ with extended support for re-using common handlers
• Developed GO support for parsing JSON for C++ and storing and calling handlers for each function_execution type
• Specific handler for curl that extract, parse and store the outgoing hostnames
• Specific handler for various types of shell execution that extracts and stores the command line
• Reorganized GO code in multiple files