Add numLaps for Flight Endurance

[miyatakazuya]

Abstract: With flight endurance being a factor in 2026, we should add a mission parameter that is set in the MissionPrep state, dictating how many waypoint missions should be completed prior to moving on to mapping and/or SDD airdrops.

Tasks:

• Add a new mission configuration numLaps to protos Mission object.
• Modify MissionParameters::setMission to set numLaps when mission is uploaded
• Modify FlyWaypoints tick to fly set number of laps.