Rocketry Preiphery

[MrPezser]

Need to add some things to accurately model a rocket launch.

• [ ] Add launch rail input/constraint to 3Dof simulation (enforce rocket orientation and constrain velocity and acceleration to be along the rail)
• [ ] Add motor information to rocket struct
  • [ ] Add thrust curve files and input information
  • [ ] Implement mechanism for adding thrust, changing mass, and tracking motor burn