JJRC X9 heron landing gear remix

This is quick remix, split into two parts. Prints much faster, less support and layers are properly oriented on the leg and lock, making them stronger. Leg now is lighter and should act as spring.
Use CA glue for joint and it will be much stronger than in original design.

Update: Tested it and was quite satisfied with results. No issues during normal or hard landings. Once drone collided with a tree and crashed from 5+ meters to the ground. One leg became separated from lock, easily fixed