Refactor mission-planner into new code written in Rust. It is implemented using three main objects: the Task, the Mission and the Scheduler. The Task contains the name of the task, a function that will be executed and another function to repair if the first one fails. The Mission contains the name of the mission and the tasks to be executed. The Scheduler handles the missions in a multithreaded manner: missions meant to be executed once on one thread, and missions meant to be executed multiple times in another.

Rust was chosen because its strictness proves very useful for this mission-critical code. A C binding is also provided (though it is a WIP) to allow writing missions in C. The code could be easily modified to also allow for Cython (C Python) bindings.