sizeFrontBack / sizeLeftRight is wrong

[jasondaming]

sizeLeftRight and sizeFrontBack don't seem to be used but are wrong. The position of the modules is already half of the side length (since it is position from the center) so doesn't need to be divided by 2.

I would also convert that back to inches before I publish to shuffleboard since the user facing units seem to be in Imperial.

[thenetworkgrinch]

I built this for frc-web-components/frc-web-components#133 does shuffleboard have a equivalent widget yet?

https://github.com/frc-web-components/app/releases/tag/app-v0.1.5

Thank you for correcting my math though!