Added gitignore to plot directory
Added gitignore to plot directory

eProsima/Fast-DDS,eProsima/Fast-DDS,eProsima/Fast-DDS,eProsima/Fast-RTPS,eProsima/Fast-RTPS,eProsima/Fast-RTPS,eProsima/Fast-DDS,eProsima/Fast-RTPS,eProsima/Fast-DDS,eProsima/Fast-RTPS