Add pathplanning

implementation/SCARA/04_path_planning/implementation.md

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+# Path Planning
+The current path planning makes it that there is an infinite acceleration required in the corners.
+We need something that can process setpoints in a way that it can follow those.
+
+## General Idea.
+So if we want to draw a box. 4 setpoints for each corner should be sufficient.
+This is a simple model detail. We just take the four setpoint and give the system some time to get there.