#172 adjust classfilewriter change vector<char> to unsigned char, add Bytecode usaged to backend and replaced bytecode_generator, impl refactor cut method for strings
#172 adjust classfilewriter to new class Bytecode and tested refactored methods successful
#172 impl true, false ad impl and refactored little bit the greater equal methods
#172 add and refactored push pop variable methods
#172 removed bytecode generator and replaced with Bytecode class
add output to calculate test file
#172 removed comments and adjust class filewriter to new class Bytecode