New layer to draw obstacles on the field widget

[itsarune]

Description of the task

When field testing, it would be nice to draw obstacles on the field and have the robots respect those obstacles when path planning. This is nice when testing motion planning on the field.

Possible approach:

1. Add a new layer that allows us to draw obstacles on the field. For now, the layer should allow us to draw and erase rectangles on the field.
2. When we draw an object on the layer, the implementation should send a proto
3. Add a new listener for it in the UnixSimulatorBackend and Backend
4. Create a new overrideObstacles functionality in AI that gets called whenever a new Obstacle proto is received
5. Pass in the new obstacles into the generatePrimitiveProtoMessage function. You may need to introduce a new parameter

Acceptance criteria

• Create a new field widget that interactively lets you draw and erase obstacles
• Test full functionality with robots. Draw an obstacle, make the robot move and observe that the robots avoid the drawn "obstacle"

Blocked By