trajectory_waypoint: add defines for point size and number of points
trajectory_waypoint: add defines for point size and number of points

krbeverx/Firmware,Aerotenna/Firmware,dagar/Firmware,Aerotenna/Firmware,dagar/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,krbeverx/Firmware,PX4/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,dagar/Firmware,PX4/Firmware,krbeverx/Firmware,dagar/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,acfloria/Firmware,Aerotenna/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,PX4/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,PX4/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,krbeverx/Firmware,dagar/Firmware