Add position methods to Turf

[cammace]

Some of the Turf APIs we expose have methods that take in position values which makes it easier on developers instead of having to convert Position to Points first. We should make sure all Turf APIs include this functionality.

cc: @zugaldia

[zugaldia]

@cammace Another option is to have Point.toPosition() and Position.toPoint() utility methods. What do you think?

[cammace]

Currently Point.fromCoordinates() can be used to convert position to point but switching to Position.toPoint() makes more sense to me. Same case doing the reverse, switching from Point to Position currently can be done doing Point.getCoordinates() but would make more sense to call it Point.toPosition() since this is what you are doing.

In any case this works, I just wanted to make sure all the Turf methods have methods like the TurfJoins.inside() to easily pass in Positions.

[zugaldia]

switching to Position.toPoint() makes more sense to me

Noting that after the recent refactor #251, Position doesn't see the GeoJSON package, while the opposite is true.

[cammace]

I think we are safe closing this issue. With the recent refactor work, this doesn't make much sense to do anymore.