Fix for VR causing errors

Zooming now uses triggers instead of bumpers, using the API.

Multiplied controller input speed by 4.

Added controller support. Bumpers zoom in/out, Y resets.

Fixed sensitivity config being ignored.

Modified zoom function to work better at all zoom levels.
Removed zoom limits.

Increased limits on zooming in both directions.

Fixed config file.

Doubled default sensitivity.
Added config.

Initial release.