Added path projection class and logic

[gzaragoza314]

Added a class and logic for path projection:

• Currently, assumes steering angle and velocity are constant for the curve it projects
• Has functions for projecting analytically via integrated kinematics and projecting discretely by timesteps
  • Tested that both give nearly the same numbers for a reasonable input

[christianvluu]

Can you check if the outputs for these area in the correct coordinate frame? We're using UTM coordinates, zone 17T.

Looks like X = northing
Y = easting

If turning right, steering radius is positive
If turning left, steering radius is negative

Heading = 0 means north
Heading = 90 means east and so forth (but you might want to check the logic of this in engine.py for the simulator as that's our coordinate frame)

[christianvluu]

Looks good - thanks!

[christianvluu]

normally gabe would click squash and merge but i'll do it since it's break.