Add support for 'No Pokemon' scanning

[CalcMan]

When scanning with no pokemon (-np), the step distance changes from 0.070 to 0.900.

Adding this support allows for large regional gym and pokestop scanners.

[gabaod]

If im not mistaken I might have just fixed your issue here. So you can git clone this locally, after editing config.ts, edit src/scripts/app/app.ts and on line 28, change private static scanRadius: number = 70; to private static scanRadius: number = 750; as it no longer is .9 its .75 to my knowledge ;) once changed npm install and should work. Im sure it would be a quick fix for the dev to add in a radio button to have that set either 70 or 750 depending on gym or pokemon worker.

[gabaod]

err.. hmm gotta be more to it than that, as i didnt notice the gaps it makes in between the hexes now.