IllegalDefense Mode added to lib

[sadraiiali]

This commit will add IllegalDefense Mode to StarterLib you can test this commit by adding this code in sample_player.cpp and in actionImpl function of StarterAgent :

if( this->world().gameMode().type() == GameMode::IllegalDefense_){
        std::cout << "------------------IllegalDefense_---------------------" << std::endl;
}

use server >16.0 and run with this command for test:

rcssserver server::fullstate_l=true server::fullstate_r=true server::stamina_capacity=150000 server::stamina_max=10000server::hear_max=11  server::illegal_defense_duration=1 server::illegal_defense_number=4